So we have a scammy grey market retailer advertising GoPro cameras using GoPro's official marketing material (mostly images). Perhaps GoPro sees this as brand damage and unleashes the DMCA, but using the wrong URL. Then the Internet misinterprets the attack as attempted censorship.

The pricing is definitely odd. Some are a lot more than retail, some are a bit more than retail.

Probably because DigitalRev is based in Hong Kong... just a guess, though.