I brew electric on the cheap...
I use a keggle...a buddy welded in a tri-clamp fitting for me.
Controller:
$45 - http://stilldragon.com/index.php/diy-controller-kit.html
GFCI: 240V, 30Amp, Inline, Manual Reset:
$153 - http://gfcistore.com/30-amp-inline-gfcis.html
Element: 5500W, 240V...