My grandma purchased a 1991 Mint set for my son when he is born. How can I find the value of this United States Mint Proof set?

Thank you!

Curioussam09- THE value of the proof set for this year is ;{ REG. set,1991 S Issue price was -$11.00 This years value is $14.00 ,in the year 2010 will be $12.00;; {NOTE- in this year they minted and put out ,two different sets; both were {S mint} for {SAN FRANISCO MINT} IT was called the {prestige set - it had a half dollor in the set that was the {MT.RUSHMORE half dollor:: ITS present value is -issue price was $ 59.00; Current value is $70.00;; IN 2010its value will be #65.00;; I hope I have answered your questions, ;; Have a great deay and GOD BLESS;I have three kids and I have gotten a proof set for each one of them almost every year;; I've been a collector since I was 7years old and now am over the hill <MOst years they go up in value but for 2010 they have gone down, I do believe that they will go back up in 2011;;Have a great day and GOD BLESS ;;F.B.E.

Hi, Flying Blue Eagle! You and I were posting here at about the same time and I saw your answer after I posted mine that was setting you up for when you would be along. So, I deleted my post.

I hope that you're doing well!

Thanks!