Every response to that question is a list of brands, and those lists barely differ from one another. Lululemon, Free People, Anthropologie, Madewell, Patagonia, Nike, Coach. You have come across this before.
Strictly speaking, they are not incorrect. They are replying to a question that settles nothing, since what actually sells on Poshmark is not a brand. It is a price range, and the fee structure determines where that range falls.
Getting this decision right is also the toughest part of resale to do consistently, which explains why product research and sourcing are the first two tasks Ecom Accelerator's team takes on for the stores it operates. You own the store, Ecom Accelerator makes the buying decisions and handles everything that follows, and you retain 70 percent of the profit.
Begin with the fee, not the brand
Poshmark charges 20 percent on anything $15 or above, and a flat $2.95 under that. For a $10 item, that flat fee works out to 29.5 percent. For a $5 item, it comes to 59 percent.
Photographing and listing takes the same twenty minutes no matter what the item costs.
So the ideal item to sell is not the one that moves fastest. It is the one that gives back the most for twenty minutes of your time, and that figure rises sharply above roughly $35 and stops being worth doing below about $20.
Which reshuffles the brand list quite dramatically. Lululemon leggings sell because they fetch $40 to $70 second hand, not because the brand is trendy.
The categories that perform
Athleisure. Lululemon, Athleta, Vuori, and Alo. Straightforward sizing, shoppers who know exactly what they're after, and it retains its value better than nearly anything else in a wardrobe.
Denim. Particular fits from brands that have a loyal following, like Madewell, Agolde, Frame, and Reformation. Shoppers look things up by brand and size, and that search is completely clear-cut.
Coats and knitwear. Patagonia, Arc'teryx, The North Face. Prices are high, competition is thinner, and the flat $6.49 shipping rate covers up to five pounds, which quietly soaks up the weight.
Handbags. Coach, Kate Spade, and Michael Kors in good shape. Authentication makes buyers hesitate, which keeps competition lower than it ought to be.
Occasion dresses. Reformation, Self-Portrait. Purchased against a deadline by someone who isn't chasing the cheapest option out there.
What does not work
Fast fashion. Shein, H&M, Forever 21, Zara. It does sell, at $8 to $14, which is exactly the range where the flat fee eats up a fifth to a third and twenty minutes of your time brings back roughly ten dollars.
Unbranded clothing. There's nothing for anyone to search for.
Items that show heavy wear. The returns end up costing you more than the sale was ever worth, and dealing with those returns is itself an unpaid task, one of the things Ecom Accelerator's team takes on along with customer service.
Trend pieces in very large or very small sizes. Middle sizes sell out first, while the rest lingers for months. Shoes behave in the opposite way, since unusual sizes encounter less competition.
What the brand's listings fail to mention
Condition and timing matter more than brand, more often than most people will admit.
A new with tags Madewell dress sells better than a worn Free People one at the same price. A Patagonia fleece listed in September outsells the identical fleece listed in April by a margin that makes the brand question seem minor.
List six to eight weeks ahead of the season. Those who do this consistently seem to know something. They keep a calendar.
How to verify rather than guess
Search the item and filter to sold listings instead of active ones. Active listings reveal only what sellers were hoping for.
Check two things. What it actually sold for, and how many units sold. A high price with three sales is a worse bet than a middling price with sixty.
Two minutes per item, and it replaces every list of best selling brands you will ever read, this one very much included. It is also precisely the method behind Ecom Accelerator's product research, which is the difference between sourcing with data and sourcing on a hunch.
Where sourcing from a list goes wrong
When you buy from a list, your closet ends up crammed with the same forty brands that everyone else who read that same article is also buying, and those people are now your competitors.
Sourcing based on sold comparables within a category you truly understand is slower and less exciting, but it yields a closet that actually sells. It also demands genuine time, since it involves visiting places, examining items, and verifying each one against data before you part with any money.
That effort is what shapes the outcome, and it is the first thing to be abandoned once the evenings get busy. On a store that Ecom Accelerator operates, it never gets abandoned, because it is someone's job instead of someone's Saturday.
What Ecom Accelerator does, in specific terms
Ecom Accelerator builds and operates stores that belong to you. You provide the capital for inventory, while Ecom Accelerator's team takes care of product research, sourcing, listing creation, marketing and sales, order fulfilment, customer service, and packing and shipping through US facilities. Over 300 stores, with a 250 person operations team.
You retain 70 percent of the profit, and Ecom Accelerator takes 30. They report a 32 percent return on inventory sold between January and December 2025, and they say full growth takes twelve to fourteen months.
The 16 month guarantee means that if you have not recovered your costs by month 16, Ecom Accelerator stops taking its share and works for free until you have. Their terms clearly state that this guarantees the service rather than your profit, that results vary, and that you can lose money.
The short version
Stop asking which brands sell. Ask what gives you the most back for twenty minutes of your time, then verify every purchase against sold listings before buying it.
Do that consistently, and the brand list will sort itself out. Do it at a scale one person cannot manage, and the question becomes whether you want to be the one doing the sourcing or have Ecom Accelerator do it for a store you own.