No. The $30 that people were talking about upthread was the minimum amount of that crypto you could buy through the Moonpay service. That $30 apparently is much more than needed for the network fee.
@Zen pointed out that you could buy a lesser amount of SOL through one of the exchanges and then transfer your crypto into your account.
IF you have Trustee wallet, add MATIC and then you can “Swap” some of your MATIC for SOL (for transfers on Phantom and such wallets) I just did it with 2 MATIC tokens and got about 0.0574675 SOL… Each SOL transfer fee is about 0.0000005 so i should be set with just that.