Just some examples...

Alpine Type R Speakers - Starting at $88
Memphis M Class Speakers - Starting at $80
DB Drive S1 Speakers - Starting at $28
RE Audio XXX Components -$200
RE Audio XXX 12" Sub - $416
Sundown Audio SAX-1200 - $228
Sundown Audio Z12 - $272
Dash Kits - $12
Remote Starters - $40
Tweeters - $4
Hi/Lo Convertors - $8
DB Drive WDX 15 Sub (3000rms) - $240
RE Audio REX 12 - $40
JL Audio C2 Speakers - $100

and tons more!