Indeed it seems to be very cheap. But you can't really compare this year to last year. Last year, March was when bitcoin was just hanging above $1k, and was clearly in the middle of a rally. Right now though, the bear market is in full blossom.
We won't see the crazy returns on your coins like last year, in fact there may even be some losses.
But as for cheap coins, now that the hype has died down for crypto, it indeed seems like coins are quite cheap and may be reaching the bottom soon. I would buy some alts/btc whenever the total crypto market cap is below $250 billion, as that is a great opportunity to get in.