I always come across folks selling "original" or NOS mopar keys (uncut blanks). Is there any thing to watch out for? Are there different blanks for different cars / years? Can a lock smith just copy/ cut these blanks to one's need? Are these even available at lock/ key stores? Last time I needed a key copied, I went to the dollar store only to be told by the clerk the key was too unique. Same with Home depot and Loews. So I know of a decent locksmith after that go around. The double set in the pic is for sale not far from me for 10 bucks. I figure it is only 10 dollars, but my quest for the knowledge is bugging me! Any help?