New cams will cost about $75.00 and I'd probably guess that you'l l need a string and cables. Hoyt cams and draw length changes some times require different strings. At least my Trykon did.
A hoyt dealer is the only one that can get the cams for you.
Like Arthur P said , check the Hoyt web site. It will give you the string/cable/camss for the correct draw length.