Your husband may not be getting them for free. I fooled my family so many ways when buying drugs you wouldnt believe it.
If I ever did get them for free it was because I traded (i get a prescription for klonipin and I would trade them for pain pills) or if a NON ADDICT had some from a surgery or something they usually would just give them to me. Otherwise, if your husband is doing drugs then he is finding a way to buy them without "taking money out". Like getting cash back at the grocery store. I used to do that all the time.