Actually, I find that quite believable. I've often remember the price of things I've bought at garage sales. The garages, on the other hand, all run together.
First I've=I
What. . .you and my wife shop together?
I agree. When we go to garage sales, we set aside a Saturday morning and hit 10 or more in a row.
I could never remember where I bought each item. After awhile, one table of somebody's junk starts to look like the next table of somebody else's junk, LOL.
We've found "treasures" at garage sales though.
Bought a Japanese puzzle box for a dollar (my husband likes to figure them out.) After playing with and solving this particular one, he told me he thought it had many more parts than the usual. A couple years later, I put it on ebay because I was "cleaning out" stuff...it fetched nearly $500.
Garage sales, IMHO, are great entertainment and in the process you can sometimes find valuables.