Just know what your getting into. Almost always you will lose money both ways on refinishing. In essence you will be paying $250s to lower the guns value another $250s if/when you sell it.
If for some reason you still want to refinish it and it pleases you, go ahead. Just dont be surprised when you try to sell it. Reblueing never, ever helps the value with the exception that you sell it to a unknowing foolish buyer.