2008 battery recommendations?

CCA or Cold Cranking Amps are not of any value in a Prius, you just need something to supply 12v first thing to close the relays etc and the traction battery does the rest. Maybe you can find a cheaper battery that has the same dimensions and terminal placement. If you have the car at home, it is a very easy job to replace the 12v battery .....

T1 Terry

 

Four years of warranty is good!
It fits the size.
It's easy to replace it yourself, everything is unscrewed with one key. And to get access to the battery, you'll need to unscrew a couple of screws on the trim with a screwdriver.

 

Yeah you don't want to be paying money for somebody to install a battery You can put elevator batteries and these things stand by lighting batteries all kinds of things you can do if you don't want to pay the $249 or whatever it is now for the group size and I've seen noco motorcycle batteries in the back of these things as long as they're driven and not sitting here in pretty good shape If you're going to sit them put a tender harness on the battery and push it up through the plastic and use it just like if you had a motorcycle or a Can-Am or whatever it's just that simple paying for somebody to put a battery in oh no you save enough money buying the rent you need and the trim tool if you think you need it and just put the battery in there's a million videos

 

These are the ones I install: 12 Volt (12V) 55 Amp (55Ah) VRLA AGM Sealed Lead Acid Battery 55 AMPS HIGH CAP | eBay

They are 55amp-hour compared to the one you're looking at, which is 35ish amp-hours and as @T1 Terry explained lots of cold cranking amps are only needed for vehicles that the 12volt stars the engine.

For Prius these mobility batteries are both better and cheaper. We've been debating this subject for more than a dozen years on here: Fitting mobility 12volt AGM battery. | PriusChat