I am thinking of trading my new Ruger LCP .380 for an XD .40 sub (found one locally for $519). Other than having 2 small pistols is there any reason I should not do this? I have never traded a gun before so will I take a bath on a trade? Should I look to sell privately first? My LCP is post recall (S/N: 371x) and has less than 100 rounds through it, I also have 2 factory mags with the pearce finger extensions. I have about $375 invested in it..