Strings begin to deteriorate the minute you remove them from their packaging. Just being exposed to the air alone begins decaying the string. Add to this the natural oils in your fingers and possibly moisture from sweating, it doesn’t take long for the strings to loose their tone and brilliance they had when new. If you play a guitar for a couple hours a day, you are probably going to need to replace strings about every six weeks. Sure you can go longer, but your tone will slowly degrade and your tuning is going to become more difficult. Strings that are “coated” will last twice as long but also cost twice as much. Your average good set of strings range from $6.00 to $10.00 per set. Coated strings on average are $12.00 to $16.00. Wipe your strings down with a clean cotton cloth when done playing and they’ll last even longer. Guitar Repair Services stocks quality strings from D’Addario, DR, Fender, Ernie Ball, Gibson, Augustine, LaBella, Elixir and Pyramid at very reasonable prices.