Staking ETH 2.0 on Binance vs buying BETH

You can currently stake only 0.1 ETH p/day on Binance to BETH on the staking portal.

Can I just buy BETH in one go and as it’s at a better rate I can revive more BETH than ETH.

Doing so will I still receive daily on chain rewards or do I have to go through the staking portal?

Thanks in advance.