You'll find that legit NP won't really sell for more, but you might get more interest in it. At the end of the day it's hard to prove it is legit when it is which is a main factor
However if I was the buyer and saw legit and illegit for the same price I'd take legit any time
Also I'd say 100% do not send from your main, always send to another account and send from there with a proxy.