the special prices are:

Final Attack(the first time you beat this fight)
2 kinds of Autograph(Dio's Autograph 1+2)
Dio's Diary
Ribbon(I got it after I beat it several times, I never got more than 1)

You get the Masamune-Blade for beating the Speed-Square game, you need at least 3000 pts to have a chance to get this trash-item

(what wouldya do without me )