Yes Rapps has some, as well as WetSpotcx on Aquabid. They are definitely around. Low pH, SOFT water, and very clean water will definitely help to keep the HITH away.
Brian ~ I've been using straight rain water AND putting peat in the filters, haven't checked my pH or hardness since I started, but I'm pretty sure its down there in the lower numbers by now. The lenticulatas and johanna are really coloring up with reds now too. PLUS I think the HITH on my atabapo IIs is filling back in. Not sure if its my imagination or not, but it looks like its getting better!