Heat exchanger

[davebell24]

Has anyone, ever used this heat exchanger?
I am building a 1HP chiller, using the mini-split a/c units
Or does anyone know of a better place to get get these?http://cgi.ebay.com/THC-100-Titanium-Heat-Exchanger_W0QQitemZ7549803326QQcategoryZ42910QQcmdZViewItem