That is crooklyn. It is from the camera and electronics district in brooklyn. They
buy below wholesale because they tell the vendor to accept a purchase order for 100 now and 2000 to be shipped the following month. Then they cancel the 2000 and keep the 100 for the 2000 price.
Then they find the lowest price on the internet and mark it up 3 times that amount so they can haggle with the customer.
On the internet they will advertise lower than the competition, but when you place your order, they will either charge your card a $40 handeling fee or call you and ask you if you wanted the battery and charger for an additional $20-$40.
If you say no, they will cancel your order, but not refund the credit card until you file a claim with your credit card company, because most people don't read the statement and they end up forgetting about the charge.