The Prez $ blank planchets should be the same as the Sacky blank planchets. There are two types of planchets- Type I is a flat blank and Type II has been run through an upset mill(think coin spooning) to give the intial form of a rim.
It looks like a genuine Type II planchet although I am puzzled by the "one side polished" comment as I am not aware that any circulation planchets are "polished" (
someone please correct me if I am wrong about this). I think one side just happens to be rougher than the other.
The real problem is the fact that this seller cannot prove that this is a Prez $ blank planchet and not a Sacky blank planchet. I could care less if the seller claims to have obtained the coin by searching 25 boxes purchased on the first day of issue- it means squat

Seems like the buyer paid about $875 too much for an uncertified golden dollar planchet, something that could be purchased raw from
http://www.fredweinberg.com/invento....asp?ID=3152 for $125.
For pics of the two types of golden dollar planchets, go to
http://home.earthlink.net/~smalldol.../page21.html for details.