Only downside with buying used is the arches might of been damaged whilst being removed by a knuckle dragger, also the reason why your looking to replace in the first place is because over time they could fade/pitt etc and this could be the case with the ones your getting
Some people get theres sprayed but unless they are taken off to start with the finish around the rubber trim will be down to how good the painter is
Getting them wrapped seems better but again it’s down to the wrapper, some remove the arches some keep in place and work around but the issue still lies with them rubber trim sections around the main arch and the base
Whatever you decide at least you have decided not to use the devils wash again