You should be able to find GH kits for around $4 – $5 per iu. In bulk it will be a little less than that, but that means buying multiple, 4-6 kits. A kit will range from 54 iu’s (Bresa) to around 128 iu’s (Serotosim). So as you can imagine, you are talking a couple of thousand $$$ here for a four month cycle.
The price of GH also varies significantly by brand. Chinese GH, will be slightly cheaper per iu than Bresa, which is cheaper than Serotosim, which is cheaper than . . . . . .