$400 is fair if it's in EX+ condition or better.. To me that means no chips in the paint and minimal fret, and/or hardware, wear.. Price goes down with condition.
For example, I grabbed a 1989 RG760 in Jewel Blue off EvilBay last month.
$300 seemed like a steal at the time, but then I found out that '4 dings around the edge-none through to the wood' meant 'dinged to the wood sealer in 8 places'. In it's condition, the price was fair, IMO.
Of course, this all depends on how much you want the guitar. I would pay more for a white RG750, in similar condition, just because I want one..
That guitar had
black pickups, btw, even though the 1989 cat. shows grey. I'm thinking late 89-early 90 7xxs had the black, or maybe it just depended on the finish. My 1988 RG750 had the grey though. Confusing would be an understatement.
