Hi PDH, I don't imagine there is a lot of savings in home brewing D72, it's more for the satisfaction of getting good results from scratch mixed chemicals. First time I did it was out of necessity. Had picked up a complete darkroom from a former APUG'er for $85, and the raw chemicals came with the lot. There was also an unmixed packet of Dektol, so I mixed it up, and it came out dark brown. Scrapped the Dektol, and moved on with D72 from there.