Of course prices are going to vary from a retailer and an eseller. The eseller typically has no overhead. Do you people have any clue what costs are associated with having a Brick&Mortar shop? Insurance,electricity,Phones,Lease,etc...If we sold at or slightly above cost noone would ever survive.
With that being said, yes there are counterfeits out there a search will yield quite afew results, specifically with Focal and DLS. Someone asked if it was worth it to spend the extra money for a serial number and warranty, how bout the fact of knowing the person that actually took your money? OR knowing that its genuine equipment? OR the fact that theyre not taking your money and running (coughthezebcough)?