Welcome!!  The buttplate is no big deal, but how bad is the stock? If it cannot be fixed, then you surely got no bargain. However, if you shop VERY carefully for a replacement, you could still break even, so long as you just planned to use it as a shooter/plinker.

As you are apparently aware, the "NRA" model is a REAL pitfall. Since ANY qualified gunsmith could make one, to realize any premium you MUST have the original bill of sale.