I you can get it for $130 then get it. and as for an amp well it depends but the only stuff i see best buy has is the kicker amps that are over $400 normal price, or the alpine MRX-M110 which it says "coming soon" OR get a hifonics brutus but thats all i can think of from best buy.
your going to want a 1000-1200 rms watt amp, so it depends what you buy if you get D4, or D2 but chances are youll need D4 since most consumer amps only do 2ohm minimum.
and an amp kit idk. it has to be atleast true ofc 4 gauge and all i see best buy sell is kicker kits.