It is still available, but I'm pretty firm on the price. I probably have like 30 hours of labor on this that I am valuing at $0 already. Let me know if you want to see it and I'll PM you my address.
I'm selling my HLT/HERMS keggle for $425. It's a 15.5 gallon stainless steel sanke with a ~40 foot stainless steel HERMS coil installed. It has 3 different 3 piece ball valves installed, one on both sides of the HERMS coil as well as a third on the output. There's a 5/8" dip tube that extends...
I'm guessing the OP has this figured out already but for others who may come across this thread, Kal's site has step by step instructions for an eHERMS HLT that are very straightforward:
http://theelectricbrewery.com/hot-liquor-tank