my whole setup has cost me around $300 as of now.

My lights:

All from Wal-Mart except the 2 15" CFLs from the local hardware store.

I bought 12 compact spiral floros 23 watts each 100watt equiv $7 - $8 for 4 3 packs of these

4 24" Tube CFLs 17 watts each 75 watt equiv

all for around $60

the pic doesn't include the 2 15" tubes.