Well a guy who used to be on eBay stedb something or other sold one of these a year or so ago for just over 1k. Our Palitoy collecting friend snake eyes bought it
The AFA population report hasn't been updated for ages so there maybe more than 1 example now, the dynamic number may tell you if anymore have been graded, however it doesn't tell you the grade.
Price depends, some people really go for afa and others aren't arsed, I wouldn't be surprised if it fetched around £750 although it is one if the more common Palitoy 12backs