need help choosing a amp for a first system

i am in the process of saving up for a system for my car and i have already bought the speakers i want and the headunit i wanted . i picked out the subs i want they are Kicker Solo-Baric 06S12L7-2 12" 1500 Watts Subwoofer(750 rms), i want 2 of them. the speakers i have are kicker ks60 . and the head unit i have is a pioneer premire 680 . but i can't decide on what type of amp i want i would like to use just one but if it sounds better with 2+ then i will go that route. the reason i want to put 1 amp for sub is i am thinking of putting 6 by 9's in a box in the side of my trunk and run an amp for them.

i want to go as cheap as possable without sacrifcing anything i am willing to buy from ebay if that would mean cheaper

Profile makes some cheap amps that put out close to if not rated power.