I just purchased some muriatic acid (HCl))(swimming pool acid) for non plant uses. I also have always heard it's not good for blueberries, but it sure would be easier to find that than sulfuric. Around here I only found battery acid in a small hole-in-the-wall automotive shop. The muriatic was $10 for 2 gallons - which is far more expensive than just a few years ago. I don't remember how expensive the battery acid cost. It lasts a long time.
I've regularly been using dry citric the past couple years because it's so easy, but I'm thinking of going back to using the sulfuric periodically - or at least then the plants are putting out new leaves. The plants do seem to prefer it. Plants in my area are grown as evergreens.
WillsC said: "There are only 2 nurseries in the country licensed to propagate them, one in Florida and one on the west coast."
The licensed west coast nursery is Fall Creek in Oregon, and they do not sell retail. If you want to order from them, it had been a minimum $2,000 order. I got most of mine by being lucky enough to find, via gardenweb, and get in on a large garden club group order. I was able to get southern highbush low chill varieties that simply were not available by any other means here in California. No nursery from out of the state could ship them here. Then the old gentleman who arranged that order passed away and that window closed. Fortunately now a few of the better varieties are turning up in nurseries - Emerald, Jewel, Southmoon... and the old standbys of sharpeblue and misty. I did not check to see what they were selling this year.
Today, I just picked another 2 quarts of BBs. :)