That's still a great price. $6/lb is the going rate here for a roasted pig.
I look at it like it's a game. Any way it comes out, I had fun. The closer I get to that perfection the happier I am.
Not much different than with beer, if you taste it an say I could tweak it just this way next time for that perfect beer...
Since you can weld - you can come up with your own Rube Goldberg Spit. Where the horizontal frame can travel up and down to raise and lower the pig from the coal bed. Huge screws, pulleys, gears, motors - it'll be great! Then you can get that perfect skin every time - and since you're not using a torch it's not cheating.
Even when it does come out perfect though, usually the only skin that gets eaten is around the ribs, maybe a bit further out but the strays are usually legs, snout, head. Doesn't bother me if the rest is barber shop smooth. But I guess if you want a perfect presentation...