I have a Optima Yellowtop 34 series that I bought December 12 for $220 that I'll ship to you for 175... comes with all original mounting accessories (the yellow thing on the right is a tray full of them, and 2 accessory mounting posts for the front.
This is the mother of all batteries for running high loads, like without an alternator. The jeep crowd uses them for winching, lights, etc. which was what I thought I was going to do before my wife told me I was going to be a daddy..
I bought it to use on my jeep, but ended up selling the Jeep and didn't want to give the dealer $220. The battery might have 20 starts on it... maybe
check out optimas site:
http://www.optimabatteries.com/_medi.../specs/D34.pdf
you can't get much more deep cycle than that?