Valuation of a Proof Set USA 1987 [solved]

Hi all,

Yesterday, I bought this beautiful set from 1987 (my birth date).

I don't think I paid too much , but I would like the opinion of specialist, to tell me what can be the value of this set!



(Sorry if my English is a little bad (I don't use Google translate to write! ))

Please, somebody can give me informations about the value?

http://www.pcgs.com/prices/priceguidedetail.aspx?c=932&title=proof+sets

Thanks.