I'm not huge into ERTL collecting, but as far as paper faces go I don't know how much I'd be willing to spend on one missing the face. I'd buy a paper face with the face intact and a fair bit of playwear over a faceless one with pristine paint, but that's me personally.
If you're talking rare ERTLs in general, it's probably worth going after worn, and in turn less expensive, models of characters like Jock or Fergus, the ones released right at the end of ERTLs licensing, but it really comes down to price. I'm probably not the best judge of price either, I've been exposed to resale shop prices so much that it pains me to pay more than a dollar for a CD.
