hate to say it, but that's a terrible price for a unspectacular product. These no name silvers will probably flake off after 2 years and make your disc useless.
If you're paying $20 for 50 disc, I hope you're getting great discs. B/c there's there's constantly deals for free after rebate or <$5 after rebate for a 50 pack.
In fact, most the major stores are having free after rebate deals on disc the Friday after Thanksgiving. Bestbuy, Staples, OfficeMax, etc... just to name a few. All these disc are just as good as the yesbuy one's, if not better b/c they have matted coatings that's more resistent to flaking.