I'm buying bismuth if it helps bring my average from 8 cents to 5 cents or so. I have 700 bismuth so far. So I would probably buy around 10000 bismuth for 4 cents in whatever currency, ltc probably best, but I have btc too.
Would buy 40000 bismuth for .5 btc
Good luck! Maybe you'll get like 10k for .5 BTC