I would be cautious of ebay rotors and pads. these are made in china, but so are many oem parts and parts store brake parts. however, you can trust the brands at the parts store especially since some of them have been available for decades to us under the same brand names.
also if you buy pads at the parts store, most have lifetime warranties, that means you bring back the receipt and a box of worn down pads, and they will give you a new set for free, sometimes over and over again. you simply can't do that on ebay.
also sure they have good reviews and a good return policy, but you can only leave feedback up to 60 days, most people probably don't even notice their rotors cracking at the slots and warping. most people cannot even recognize the symptoms of warped rotors. in the end, you will end up spending more money with inferior parts.
On their return policy, how many customers do you think would actually pull off their warped rotors and pads to ship them back, while having their vehicle down. 120 days is nothing, parts store parts have lifetime warranties.
if you can, compare the thickness of the rotor and vanes from a OEM rotor to that ebay one, you will notice much more material on the OEM, which is the main reason OEM usually do not warp. Most parts store rotors are thinner too, so your only choice is dealer rotors but if you only need 4 more yrs out of the jeep then I would not dish out the money for OEM rotors.
Lastly, since parts store let you exchange old pads for new ones, I would opt for a mid to top grade pad mainly to have less dust and squealing. also the parts store can check your current rotors, if they are within spec of thickness, they can make them true for about 10 dollars each. so best case scenario, you clean up your rotors for 40 dollars, and spend 20 dollars for front pads and 20 dollars for rear pads (low grade lifetime warranty), so for 80 dollars you are all set, and with simple hand tools and a jack, you can do all the brakes on a Saturday afternoon. the benefit of doing them yourself, is that you can inspect other components, grease the slide pins, and use some quiet lube on the pads, and inspect your brake fluid condition.