Why not grab a Sapphire 8500LE from Newegg - the 9100 is just a "rebadged" 8500.
I have my Sapphire Radeon 8500LE (250/200) re-flashed as a 9100 card.
It was a 64MB card that I ordered - the stickers also say this - but the card is infact a 128MB version.
Not too bad for $72 shipped.