Don't Cite Unsold eBay Listing Prices

It doesn't make for as good of a headline, but learning to look at solds (and even more importantly, sell through rate) is the first thing you learn (or should learn) if you do any reselling.

Additionally, you have to factor in free shipping. A rough way to do it is to multiply the % times the average shipping price and deduct that from the average sales price (so the "real" average sales price for the totes is closer to $14 or so)

This is a classic problem when people try to find "the current price" of something. A typical error is to take an average of the current rentals currently on the market and describe that as the average rental cost somewhere. Usually the book is so thin that a few places being taken off the market will shift the price a lot while most people can be paying something like half of that and every rental that lists for less than the clearing price is acquired so rapidly that any sampling method will reliably miss it.

Ha this summarizes marketplace problems in one sentence. All items that are still available for sale are typically priced too high. The slices of market that actually moves a minuscule 1-5% of items and they don’t hang out for long

Could have been helpful for the article to include a tutorial:

In the filters, there’s one for “completed” and “sold,” you want both checked.

Even better are people who sell a used piece of equipment for a higher price than a new one.

Does this mean my Beanie Babies are not worth $250 each? Asking for a friend... /s