Constructive criticism:
I love the selection, but I could really use item descriptions/titles and better pictures in order to know what to bid on online. Like the identified real photo postcards, the graded cards that I have to open the preview page to see what they scored, and the lack of condition information on items.
And identification of oddball items like the Williams/Yaz stamps; if you can find out what set and year they're from, they might sell for more. Taking the time to improve the item listings online will generate more income for your auction, over and above the expense of the research and writeups.
Add: website functionality on your main site is lacking; ability to sort items by sport or decade or type (unopened, singles, photographs, autographs, etc) would really help people navigate the items. And the images that only allow mouseover to see parts of the image and not a full blow-up image are annoying.
http://auctions.sacoriverauction.net...-LOT16700.aspx This item is counterfeit and not listed as a replica/fantasy/fake on the page.
http://auctions.sacoriverauction.net...-LOT16703.aspx Would benefit from back scans or at least a line stating that the backs are clean/not removed from scrapbooks/written on.
http://auctions.sacoriverauction.net...-LOT16708.aspx This is a Jell-O, not Post. Mantle was a SP in Post that year, and heavily overproduced on the Jell-O boxes. You can tell by the width of the card and the red line through the stats.
http://auctions.sacoriverauction.net...-LOT16857.aspx Christmas Rack Packs should have an authenticity disclaimer that they are not original and are considered aftermarket repacks which may have been made in any year.