Can I still scan/buy at “TjMaxx” and sell on Amazon?

Hi guys, as simple as it gets. I find myself wondering this several times a week, since I saw a couple folks scanning stuff who say they send it to amazon and it works for them.

Can I scan “$300 worth of stuff”, setup a seller account and “ship it to amazon” and make “$600”?

I get it, gated, new seller, etc. I’ve owned an online biz directly affiliated with China prior to Covid, never touched amazon or retail arbitrage.

Thanks for the advice!