Here might be a good posting of Artist's that sell signed items.
Shared musical exploits.
Shared autographs and the like.
I know Joe Bonamassa sells items out of his store: Hand Signed Joe
CD's, Albums, Baseballs, Posters, Lithos even Guitar's. They range from $40 to $799 PLUS!
Robert Cray also has some cool items : Robert Cray Vault
His stuff is $20-$30 He also used to sell his CD's pre-order signed. His autograph is and has been just the "RC" initial for about 20 years now, but it's still cool to have.
Buddy Guy also has some cool stuff for sale in his store:
Currently there are 3 guitars being offered for sale: $349.00 SIGNED: Buddy Guy Guitar's (A black, White and a Red the sunburst sold out)
(NOT Cheap guitars, these are AWESOME Guitars:: Fender Squier Bullet Strat with a beautiful black finish and our special Blue Seal Certificate of Authenticity. It features an alder body, 3 ply pickguard, 3 single coil pickups, and a maple neck.)
No outside COA's are needed all items come with ones from the artists, keep the BILLS OF SALE'S and you will be good for years to come.
Buddy also is selling CD's Poster's and photos and books, these items will be found in the SIGNED BY BUDDY section of this website:Buddy Guy signed
I'll update this as I notice others, and please feel free to add to this list as you all see bands selling items.