Depends on how cheap, and how big your indoor grow is. My veg area is about 4 FT in length x 5 FT high x 3 FT wide, I use CFL's - 7 27W 6700K (Daylight) and 6 27W 3700K (Cool White) bulbs (around 3$ per bulb) and I pull around an oz off each plant that are about a foot tall when they go into flower.. walls are painted flat white, its in a closet so there is tons of headroom but i rigged up a cardboard reflector thats covered with an emergency blanket.. after this crop ill be switching to a perpetual harvest because i made a clone/veg box out of a uhaul cardboard box, my whole setup cost maybe 150$ if you factor in the soil and nutes (foxfarm), lights, thermometers, fans, and timers. I wish I had a camera but my friend decided to fall in the water in the Keys with my backpack on not too long ago.

Nice outdoor grow btw!