i dont use GB or AA auctions as a guide for pricing weapons. same rifle will fetch 1000.00 one week, and 500.00 the next, it all depends on how bad, and who wants it.
i say the 750.00 price is in the ball park, i sell shooter grade 03,s at every show i set up at from 650.00 to 800.00 , thats easy when everyone else has them priced at 950.00 and up.
a nice original rifle is harder to sell, then a shooter, though they will bring much more money for sure, you just have to find that collector thats looking for it.