Your artwork, just like almost anything in life, is as good as its weakest point. You must be careful to make an even investment and avoid skimping on a valuable category, in order to maximize return on investment. Good frame, good matting, good glazing (glass), good craftsmanship, and good care-taking = good appraisal valuation and good return on investment. Slight any one of these categories and it could spell doom for your investment. Pay for it once, do it right, and take it to real professionals.