BTW I go to yard sales and thrift shops to resell.
I hope you mean you sell TO those dealers.
If not, great, so you pillage our last bastion to obtain good deals just like all the other "store owners" who look like morons with their bar code zappers to see if a game is worth buying?
Do you use ebay as your price guide? Because every small shop certainly reaches the same audience as ebay does, so Cotton MUST be worth $300 on a brick n mortar shelf. Maybe you dont approach it this way, but too many "stores" do. Just strikes a cord. Retro game stores are usually a joke because they dont really get the market. Or, its just a way to stroke a collection and price too high because they dont really want to sell. We have both around here, and frankly, i have never seen a retro store actually think outside the box.
Most stores reach a very small audience that are willing to spend money on old games. Owning a store is about moving inventory. Too many owners will sit on a copy of legendary axe for example, until they get that $25. Even if it takes 5 years.