There actually can be bs from a manufacturer where a site cannot list an item below their MSRP so in order to do a sale they have to do the bs like “add to cart to see price” or making you sign in. Sure sometimes it’s not an amazing deal but it can often be the lowest price you can find an item because they aren’t allowed to advertise a price that low.
Edit: See comment below to learn about MAP “minimum advertised price” which is different from MSRP “manufacturer suggested retail price” leaving my above comment alone with its inaccuracy so that the below comment continues to make sense and you can learn as I did.
This argument implies that Biden is left of Obama. It also ignores the very real risk that by not voting for Biden in this round there will be no fair future rounds to participate in. It also ignores all other elections and chances to influence the party.
Trump is a uniquely different candidate than McCain, Romney, Bush, whoever you want to pick. He tried to interrupt the peaceful transfer of power and there is little reason to think he would not try again if given the chance.
Real life is not so simple as game theory and attempting these simplifications is not as rational as you imply.
Please vote in the coming election for Biden. The consequences of “Punishing” the Dnc are too dire to ignore.