I dunno, I’m not awesome nor do I use a scanner (when doing personal buys)…but if I am buying outside my personal collection, I use common sense.
Yes, I probably have missed some gems, but also have gained a lot of gems since I stick to signed books Western history and unusual books that I come across and also try to vary my inventory so it has something for most peeps (I’ve even bought some books I totally disagree with…but hey, it gives ya an idea of what your enemies may be thinking, lol).
I don’t buy paperback best sellers; am careful about children’s books (will buy them if vintage with great illustrations); maintain a list of books that tend to be pricey from setting aside time each week to search out books that are hard to find that have a hefty price tag (you can end up finding at least a minimum of about twenty or more books a week to be on the lookout for by spending minimal time); if buying outside my own library I’m picky about what I pick up, it has to be pretty darn good; if looking at a sale and find an older book tend to buy those with dust jackets…yeah I could go on ad nauseum…so common sense.
At our FOL, we use A Seller Tool and it works (helps us pull out books for our special auction). I know some of my fellow FOL peeps get antsy when people come in with scanners (and have been pretty unfriendly), but, so what…we are there to sell books and make money for our library not horde them.
I have noticed when people having sales (yard, estate, garage, benefit sales) see someone scanning, it tips them off to jack the price up as many people don’t put prices on books at sales (at least our local sales). And, I have seen at FOL’s people with scanners being asked to leave (which I think is just plain stupid, a sale is a sale).
So because we use AST at our FOL, I would say it does the job (and I think it was lex who also gave a thumb’s up on it, too).