It's the question that comes right after "should I?" and it's the one that keeps a lot of owners stuck: what's this going to cost me to get going? I can't hand you a single number, because it depends entirely on how you set it up. But I can show you exactly what drives the number, so you can build a realistic figure for your own store.

The good news up front: a used department is usually one of the lower-cost expansions a retailer can make, because you can start small and let it grow on its own earnings. The cost lives in a few specific places.

The four things you're actually paying for

  • Inventory acquisition. The biggest and most variable cost, and the one you control most directly through your model. Buy outright and you put cash in at the counter; consignment drops this toward zero; trade-in spends store credit rather than cash. Your model moves this number more than anything else.
  • Space and fixtures. Racks, shelving, signage, and whatever gives used a real home. The bigger, often hidden cost isn't the fixtures, it's the opportunity cost of the floor space itself.
  • Labor. The time to source, inspect, price, tag, and merchandise. If it's your own hours early on it doesn't hit your bank account, but it's real and worth counting, and the hours add up as volume grows.
  • Systems and setup. A way to track used inventory (and, for consignment or trade-in, ownership and credit), plus any point-of-sale adjustments. Usually minor, but don't forget it.

Why "start small" changes the math

A used department doesn't have to arrive fully formed. Start with a modest footprint, a lean first buy (or consignment, which needs almost no upfront cash), and your own labor, and the startup cost can be genuinely small. Then let the department's own earnings fund its growth. That approach caps your downside and lets the business tell you when to spend more, which is exactly what a low-risk pilot is built to do.

The expensive way to start isn't a startup cost. It's a bet.

A big upfront inventory buy, a large space commitment, and hired labor, all before you know it works, is the version that goes wrong.

The number that actually matters

Startup cost is only half the question. The real one is how quickly the department earns that money back and starts contributing. A low startup cost that never turns a profit is still a loss; a higher one that pays back in a season is a bargain. The smart way to plan a launch is to keep it small enough to be low-risk while lining it up against a realistic read of what the department will earn.

The one-time costs to get going

The upfront cost of starting a used department is usually far lower than owners fear, especially if you already run a store, because you already own most of what a new business would have to buy. The one-time costs typically include preparing the space you will dedicate to used, any additional fixtures or display for the section, signage to make it a real destination, a few tools for intake and prep such as a steamer or testing gear depending on your category, and any addition or upgrade to your point-of-sale system to handle one-of-a-kind items and, if relevant, consignment.

Because you are adding a section rather than opening a business, most of these are modest, and many you may already have. The biggest genuinely new one-time investment for most stores is the system to track unique inventory and consignor payouts if you take consignment, which is worth getting right early, as covered in the guide to the best POS and inventory setup for resale and consignment. The takeaway is that the barrier to entry is low: you are leveraging a floor, a register, and staff you already have, which is exactly the structural advantage an existing retailer holds over someone starting a resale business from scratch.

The ongoing costs that actually matter

The recurring costs matter more to profitability than the startup costs, and they are where the real economics live. The main ongoing costs are inventory acquisition, what you pay to buy goods outright or the split you pay consignors, the labor to run intake and upkeep, the share of rent and space the department occupies, the markdowns you take on aging stock, and the small cost of your systems. Of these, labor and acquisition are the two biggest, and both are within your control through disciplined buying and efficient, systematized intake.

Understanding these ongoing costs is what separates a department that looks profitable from one that actually is, because a simple margin on the sticker ignores the labor and space that a real accounting has to include. That full picture is laid out in the unit economics of a buy-sell-trade program and in the honest read on whether a resale section is actually profitable. Budgeting for the ongoing costs, not just the startup ones, is what lets you set prices and volume so the department genuinely contributes rather than quietly running thin.

How the model changes the cost

Your choice of acquisition model dramatically changes the cash you need to start and the risk you carry, so choose it partly on the basis of what you can afford. Buying inventory outright requires the most cash up front and carries the risk that goods do not sell, but it gives you the full margin when they do. Consignment requires almost no cash to fill the floor and carries little inventory risk, since you pay the consignor only after the sale, though your margin per item is thinner. Trade-in credit sits in between, sourcing inventory at the cost of store credit while driving new sales.

For a cash-conscious start, consignment and trade-in are powerful because they let you stock a compelling floor without a large inventory investment, which is why so many new used operations lean that way, a choice explored in depth in buy outright, consignment, or trade-in and how consignment works. As you learn what sells and build cash, you can add outright buying for the goods where the margin and confidence justify it. Matching the model to your available cash is one of the most important early decisions, because it determines how much you have to risk to find out whether the department works.

A lean way to start

The cheapest way to start a used department is to start small and prove it before you invest, which keeps your at-risk cost to almost nothing. Use space you already have rather than building out, lean on consignment and trade-in so you are not buying inventory before you know it sells, use or lightly extend your existing systems, and keep the initial footprint modest. Run it as a real but contained low-risk pilot, prove the turn and the margins, and only then invest in fixtures, systems, and inventory at the scale the results justify.

This lean path means the true cost to start can be very low, because you are testing with resources you already have rather than committing capital on faith. The retailers who get into trouble are the ones who build out a large used department before proving demand, spending on space, inventory, and systems for a concept they have not validated. Start lean, let the pilot tell you what the full department deserves, and scale the spending to the proven opportunity rather than the hoped-for one. That sequence turns the cost-to-start question from a barrier into a small, controlled experiment.

The costs owners tend to miss

A few real costs hide from the simple startup math, and accounting for them keeps your projections honest. The biggest is your own time and your staff's time during the ramp, since the early weeks of learning to grade, price, and source efficiently are slower and more labor-intensive than the steady state, and that learning curve is a genuine, if temporary, cost. Markdowns are another, because some of what you take in will not sell at first price and clearing it is part of the model, not a failure. Shrink and the occasional bad buy belong in the math too. And if you take consignment, the tracking and payout administration is a small but real ongoing cost. None of these are large, but leaving them out is how a department that looked profitable on a napkin runs thinner in reality, so fold them into your unit economics from the start rather than discovering them later.

Fund it from cash flow, not a big bet

The healthiest way to fund a used department is to grow it from its own cash flow rather than sinking a large sum in up front, which is exactly what the lean, consignment-and-trade-in approach makes possible. When you start small and let the section's early sales fund its own expansion, buying more inventory as proven winners sell and adding fixtures or systems as volume justifies them, you never have much at risk at once and the department effectively pays for its own growth. This is far safer than treating the launch as a big capital project that has to be right the first time. It also naturally paces your expansion to real demand, since you are reinvesting proceeds rather than spending on faith, which keeps the whole effort disciplined and low-risk while it finds its footing.

What it really costs, in perspective

Put it all together and the honest answer to what a used department costs to start is: much less than a new business, and much less than owners fear, if you leverage what you have and start lean. You already own the floor, the register, and the staff; you can source with little cash through consignment and trade-in; and you can prove the concept with a modest pilot before investing in scale. The real cost is less about dollars and more about the discipline and attention to run it well, since the department's success turns on good buying, efficient intake, and consistent upkeep far more than on how much you spent to launch it. Approach it as a low-cost, well-run addition to an existing store rather than an expensive gamble, and the cost-to-start question resolves in your favor, which is precisely the structural edge an established retailer holds in resale.

Related: How to Write a Thrift Store Business Plan and How to Start a Consignment Shop.

Funkhouser Strategy helps independent and mid-market retailers make the calls that move the P&L, resale included, with senior operator judgment and no vendor agenda.