True but for some reason I got side tracked on a cranking battery and I was thinking about the group 31 that a lot of people use. You are correct they have smaller size batteries cheaper than $175...the OP has yet to say what he is looking for. A cranking or trolling battery. Buy the statement of him looking for two batteries I bet he is looking for trolling batteries and if that is the case then smaller group size batteries you pointed out will be within his budget.
Correct but Marine Cranking amps...in order to get 800 Cold Cranking amps it will need to be around 1000 Marine cranking amps. Sorry I did not specify what amp rating I was talking about in my original reply.