Personally, I wouldn't buy any brake parts from NAPA. I've had problems on multiple vehicles I've worked on because of improper fitment or parts that are just horribly out of spec even though they are brand new.
personal opinion No i would not buy a rebuilt caliper from an aftermarket source unless its in a pinch but with that being said and I know this is kinda contradictory but I do not see any problem with them. The caliper is a ford unit it just has new seals that were installed by someone else. as long as they installed the seals right it should be good as a new or oe reman.