How much is all 50 state quarters worth as a set?

i was wondering if it was worth more than the $13.00 or whatever the amount is. I’ve collected them since 98′ and have all the quarters in a collectors map. if it is worth more than the individual quarter value, about how much is it worth as a whole?
srry ment 99′. i didnt want to get flamed for that.

My guess is there are thousands that have the set intact and since it has not aged that much you have no increase in the amount of the set other than keeping it and possibly have to pass it on to your children to reap the rewards.