I have about 5 grand into my turbo kit and I don't have a stand alone or internals. I have basically every other thing imaginable...here is my set up:

Greddy GSR turbo kit with BIG FMIC
DSM injectors
cartech FMU
255lph fuel pump
Vafc
inline pro head gasket and block gaurd
Profec-B
greddy EGT and boost gauges
apexi auto timer
HKS SS BOV
custom DP and charge pipe(hopfully I can have a new B-pipe made too)
ARP head studs
skunk2 cam gears

I lucked out on the kit. it was 6kmiles old and a friend of a friend owned it so I knew all about it and got it with all the gauges and boost controller for 3 grand. then with all the other crap I needed it cost me like a grand to 1500 I would guess