answer:It really depends on the artisanship and craftsmanship. I’d pay less for something that is rough enough that you can feel the lines between print layers than something smoother, and more for something that had fine details than something that omitted them for the sake of quicker/easier printing. Also, what about coloring? Are we talking monochrome, a layer of paint that will wear off, or something printed in multiple colors and thus won’t get the color worn off? How functional is it? Are we talking something merely cosmetic, something that will make it nearly invulnerable, or someplace in between? Does it cover ports to keep dust (or even water) out? There are a ton of variables in play here, so there is a wide range of prices I would be willing to pay.