Wow. So 750$ all in for an M48? Pretty sure my lgs sells them for 499. Even that is high in my opinion.
$500-550 is the norm for a shooter grade M48 at a store. The ones that Weimajack and TradeEx had recently have been mostly excellent condition, #'s matching rifles with accessories intact for $595. It seems Weimajack upped his prices by $50, he has a couple in wrap - I'm assuming they're mint.
I know everyone is stuck in 2012 when Marstar sold #'s matching excellent condition M48's for $349, but things have gone up. Haven't seen any more like that until now and the batch is almost sold out.
Try to get a Chinese SKS for under $300 now. Supply and Demand. If you bought yours for $350 back then, I'm sure you can make some money after this batch is all sold out.
Mine is #'s matching, even factory writing on the stock matches, near perfect bluing, brand new bore... just a few marks on the stock.