I don't think you will get them below melt or even at melt because it is a key date. Right now a roll at melt is around 135. So at best you are looking at probably around 140. This also sounds to good to be true, 1949 S dimes sell for 30 bucks each if they are MS 62 or higher (atleast at the coin show I went to recently and the flea market that has a couple coin dealers) I don't see someone selling you an unsearched roll of those coins for 190 when if you get one or two of the coins to grade MS 62 or higher you have already made your money back in those 2 coins and the silver value of the rest of them.