LOL its not as easy as that. I own a Powder Shop and fix peoples stuff all the time (the ones who try it themselves). Although the process seems and looks to be easy, there are a ton of other factors that aren't often said. Although those cheap guns can and do (at times) produce an ok job, they lack the kv adjustments needed for different metals and issues that may arise. Also you would need a spare oven as you cant use one that will be used for food prep afterward. If you have a reputable shop close by, stop in and talk to them. Will save a lot of aggravation in the long run.
Cheap gun 65
Powder 25-30
used oven 60-100
strip and blast profile 50/hr
masking supplies and phosphate, 20
most shops are around 80 per wheel with a guarantee.