I just picked up "C Unleashed" from Amazon for $39.99 plus shipping. I
don't use 'picked up' lightly. It takes two hands. I'm afraid to check
for the shipping charges. They sent it in a separate shipment on a
bigger truck. :-)

Although out of print, it is available. I got a 'new' never opened one.

--
Joe Wright
"Everything should be made as simple as possible, but not simpler."
--- Albert Einstein ---