Wholesale? They have a faq and there is written that they do not have a minimum order. How so cheap is also answered so:
No warranty: We do not offer a warranty with the watches, so we save a lot on fixing the watches and shipping the watches back.
No shipping insurance: We do not reship or refund the watches if they are lost in the air or seized by customs, this greatly reduces our costs also.
Only Western Union and Bank Wire are accepted: We do not need to pay credit card company for processing fees or PayPal for transaction fees, and we do not need to worry about chargebacks. This saves us a lot of money.
Huge buying power at the watch makers: We sell a lot so we have the buying power to negotiate the prices with the maker, that is why we can offer you at prices that others can’t.
I have no idea if i should worry..