[laughlinfan]

Welcome to the site! You will find lots of helpful people here if you stick around! As has been mentioned, of course, condition is a big factor. The large Great Feats sets usually go around $80 or so. The two negro league sets have been doing very well these past several years, although $500 for the 1974 set seems very high to me, unless it was in mint condition. The 1974 set has a better selection of popular players, and I think Bob made/sold more of that set than he did the 1978 set. A seller has sold quite a few 78 sets the last few months, so you should be able to see the prices he has been getting. The smaller Great Feats set is pretty cool. They are not trimmed, and I think they were the first of the three versions of the set issued (small red borders, large red borders, and large blue borders). The small red set is pretty tough to come by, and I don't think I have seen a full set for sale on eBay in quite a while, but maybe one or two have sneaked through! For some reason, they do pop up in lots of 5 or 10 cards from time to time. I have learned a ton about Bob's issues, but I don't have a lot of details on the small red set.