Yeah... you can probably do it for $200 easy. I'll suggest getting a bulkhead kit from one of the great vendors here. After all the time and $ I spent collecting the parts, it wasn't any savings for me. YRMV.
Part of the trick is to keep your eye out for the Coolers to go on sale. Even at $50 locally, that's $100 left over for other parts. You can batch sparge to start until you get more cash. it'll only be a little more for a false bottom and sparge arm.