I just looked on RockAuto; If I got the specs correct, the name-brand remans are $40-50 each plus core. You could probably rebuild for $20 each if they have phenolic pistons.
They look like standard floating calipers though, so really easy to rebuild, especially if you're not in a rush. Pull the slide pins, check the condition, replace if necessary. Replace the slide pin boots and any slide pin rubber bushings, grease as you go. Push out the pistons with a rubber-tipped blowoff nozzle in the hose port, and check the piston condition. If the pistons are phenolic, throw them away and order replacements ($6 each). Clean and check the caliper bores, replace the piston seal(s), replace the dust boots while putting the pistons back in. Replace the pad guide clips as well, just like anytime you do a pad replacement.
For most calipers you'll need these parts (kits differ in what they include:
Slide pin boots/bushings
Piston seals
Piston boots
Copper banjo washers if the brake lines have banjo fittings (NAPA carries locally, no one else does)
Optional slide pin replacement
Optional piston replacement (replace if phenolic)
Optional bolt replacement, caliper to caliper bracket
Optional speed bleeders (bleed fitting with check valve) to bleed without a friend or extra equipment
It's actually really easy, it's just time consuming if you're making everything clean and pretty while you're doing it. It takes longer to brush and clean/dry the cast parts than it does to reassemble everything. There's a couple of stupid tricks (like turning the boots inside out onto the piston so they roll into place, and seating the boot lip before inserting the piston), but you can probably learn everything you need to know from youtube.
Standard floating calipers are so simple that remans are perfectly fine usually. Some of the brands don't replace the phenolic pistons (bad way to get cost reduction), and it's really hard to find info on who does or doesn't do that. That's probably the best reason to spend a little extra and get a reputable name brand, along with probably getting better quality seals and boots.
