USA Business Corp Eastbiz.com, Inc. Your boss is friends with my Dad, and told me to contact you... Las Vegas, Nevada

A woman calls and says her Dad is friends with the boss, who said to contact you about getting rid of discounted office supplies.  I'm getting out of the business and moving out of state and really need to get rid of these.  They quote a price per dozen, but when the invoice arrives - SEVERAL MONTHS LATER - that price is per item, not per dozen.  Instead of paying the $125.00 we would have paid at WB Mason, the invoice quotes $600.00.  Outrageous?  Nevada seems to have no Attorney General complaint form for this type of scam...  But Pennsylvania does!