No. It happens all the time. You might have to be an Authorized Reseller for some products. For example, to sell Apple products you have to be an authorized by Apple.

I wouldn’t do it personally, you will be fighting to win the buy box and the margins are not that great

google that to get specifications

Not worth it the profit you make after paying amazon, asvertising, and any other cost is slim..we used to resell but changed our model because the competition is too much and it pushes the price way down.. You’ll make pennies on the dollar