Court, vendors should not be allowed to use the forum as an advertising vehicle unless it is a paid ad that you use to support the website. This kind of stuff gets booted hard on most forums.
I believe the question very legitimately raised here is whether Opti Bike is selling two of its bike models delivered for $3,000 when smart EBR readers can buy almost the same bike for $1500 plus $200 shipping from Bofeili's vendor in Oregon. Pick up your Bofeili in Oregon and pay no charge for shipping.
There is no such thing as a right-fair-moral or wrong-unfair-immoral price. Every price is determined only at the moment a seller and a buyer agree on a price. Age 86-and-kicking always seems excessively protective of high profit sellers. I too am age 86 and kicking. Before I retired I directed worldwide public relations for the IBM Corporation. I am not stupid.