Cost ought not be your only deciding factor and is likely to drag you into the dark arena of contaminated and diluted wax, which in the end will do none of us any favours, given that wax is recycled endlessly. Check out ITLD's post 9 on
this thread today on the subject.
Expanding numbers in the absence of cash is a slow process: keep bees, sell honey, buy kit, keep more bees, sell more honey, buy more kit, repeat.
All very well to look to save a few pounds here and there on basics, but what of your yield at the other end? Maybe you aren't interested in honey, but suppose you produce 64lbs next summer, and suppose you want to off-load some of it, at what price would you sell it?