Add up the cost of ingredients; track the time it takes to produce, package and market them; figure out what your time is ‘worth’ and calculate that cost; add together materials and labour costs to get the cost of making/selling them — and that’s the effective out-of-pocket; then figure out what you’d be happy to get for a profit – and that’s your mark-up.

Take that total and look, realistically, at what similar products are selling for: if your price is competitive (or if there’s a clear niche demand for your product that will support a higher-than-average cost), then you’ve got your price.

I dont know if it’s a viable proposition — that would depend on your costs and your market — but I do know that these dog treats make very popular gifts for our dog-owning friends!
:-)