Depends on what "normally" means. Some guy on eBay claims these are 1/60, so worth $900 each.
I think fair value is $500-$600 each, so any price under that's worth immediate attention.
IMO fair value is $600-800 depending on condition, so this was a SWEET SCORE!!!!
I have 2 of them and this would have been my third had it been within 500 miles of me...