A price is a sentence about a specific object: this mark, this condition, on this marketplace, after the costs that marketplace charges today. It is not a category. “Vintage bowls sell high” is not a price. A Butterprint bowl with a faded print, mailed across the country, is a price, and it is a different price from a sharp one you hand to a local buyer. This is how to build that sentence for eBay, Poshmark, and Mercari without inventing a formula those companies will change.
The fee schedules move. Read them on the day you list. What those fees are made of is the vocabulary. The numbers belong to the companies, not to an article.
Sold, not sitting
Search the exact object. Maker, model or mold number, size, and the fault you have. Then look at what sold, not at what is asking. An active listing at a proud number can sit for a year. It is an advertisement. A sold listing is a buyer.
Match condition harder than you match the noun. A chipped Fiesta pitcher does not get the price of an intact one because both are Fiesta. A book club edition does not get the price of a trade first. A loose NES cart does not get the price of a complete copy. If your comps are cleaner than your object, you do not have comps. You have a mood board.
Use more than one sale if you can find more than one. A single outlier, high or low, is a story. Three sales in a band are a band. If you can only find one sale and it looks unlike yours, your range is wide, and a wide range means you list at the low end or you do not buy it in the first place. What to check before you flip is that decision, made earlier.
Outliers have causes. A high sale might include a poster yours lacks, a signature you did not notice in the photo, or a buyer who needed it tonight. A low sale might be a crack the title hid, a best-offer you cannot see, or a seller who needed the money. Read the photos in the sold listing. If they do not show the mark and the fault, the number is weaker evidence. Do not average a careful sale with a sloppy one and call the average a market.
The three audiences
eBay is where a lot of identified objects actually trade, including parts, odd sizes, and things a casual buyer has no name for. The search is literal. Your title should contain the words a buyer types: the mold number, the size, the pattern, “book club” if it is a club, “untested” if you did not boot it. The price has to survive eBay’s current fees and a shipping label. Collectors live here. So do people who return items. Describe the chip in the title if the chip is the story.
Poshmark is built around clothing and a social feed. A Coach bag, a pair of 501s, a fleece with the size readable: these can belong there when the buyer is shopping a closet, not a parts diagram. Measurements matter more than a poem about the vibe. Sharing is how that marketplace moves goods. Sharing is not a price. If sold comps on that site are thin, do not invent a clothing price from an eBay average and hope the feed agrees. Look at what sold there.
Mercari is a general marketplace with its own fee and its own shipping habits. It is often fine for clothing, games, and small home goods. It is not a reason to skip comps. The same honesty rules apply: the photo is the condition, the title is the identity, the price is what similar sold for after that site’s fee. If you cross-list, you are promising the same object in three places. The moment one sells, the others come down. Double-selling a one-of-one is a mess you made.
None of these is “best.” The best is the one where your exact object has sold, to buyers you can ship to, at a number that clears costs. A local pickup listing, a flea table, or a garage sale can beat all three when the object is heavy, fragile, or untested. Cast iron and furniture often live in that sentence.
Shipping is part of the price
Weigh the item packed, not in your hand. A bowl needs a box. A jacket needs a mailer that will not tear. A record needs a mailer that will not bend. The label cost is a number you can look up before you publish. If you offer free shipping, add that number to the price the buyer compares. If you charge calculated shipping, do not also hide a second shipping profit inside the item price unless you enjoy returns and angry mail. Buyers compare totals.
Heavy and cheap do not survive the mail. A common Spice of Life baker can be worth using and not worth shipping. Price it for local pickup, or do not buy it to resell. The kitchenware note is full of this. So is the tool note. If the packed weight makes the label approach the sold price, the item is not a mail-order product. Say pickup, or leave it.
Dimensions matter once the carrier’s threshold kicks in. A long plane, a framed print, and a pair of boots can price as a package even when the scale looks kind. Measure before you promise a label you have not bought.
The first number, and the stale one
Start at the low end of real sold comps if you want it gone, and near the middle if the condition is honestly as good as those comps and you can wait. Do not start at the highest sale you found. That sale is often the one with better photos, a complete set, or a buyer who did not shop around. Your listing is not that listing until it is.
Best offer, if the site allows it, is a second price. Decide the floor before the offer arrives, including fees and the label. An offer that feels rude might be the actual market. An offer that eats the label is a no. You do not have to accept either. You do have to know which is which before you are insulted.
When a listing goes quiet, check comps again. Markets for a band shirt or a toy move because supply showed up, not because you were patient. If sold prices dropped, your price should drop or the listing should end. If sold prices held and your photos are dim, fix the photos before you blame the price. A price cut does not repair a blurry mark.
Season is real for coats and not magic for everything else. A wool coat in summer can wait or can be priced for the buyer who plans ahead. A stained coat in any season is a stain. Do not hold ordinary goods for a hypothetical holiday. Holding has a cost: the space, and the chance you forget the fault you meant to disclose.
Lots, singles, and the words in the title
A single common game, book, or wrench often cannot clear a fee. A lot can. The lot needs a honest title: ten sports games, not “vintage lot, rare.” Count them. Photograph the titles. Bins create fake lots because everything was in one tub. Sort before you price. The sort is the product.
Title the identity first. Maker, model, size, color, fault. “Beautiful,” “must see,” and “wow” are not keywords. The buyer who searches sterling flatware typed sterling, not wow. The buyer who searches a mold number typed the number. Put the number in the title.
Worth can give you a range from a clear photo. A range is a check on whether you are in the right neighborhood, not a price to paste into a listing. Your price is the sold comps of the object you will actually ship, on the site that will actually charge you, after the label you already weighed. If that sentence does not leave you a reason to have bought it, the listing is how you find out late. Estate sales and the thrifting floor are where the sentence should have been written, in shorter form, before you paid.