I can settle up to about 500k USD in stable coins on Solana for a fraction of a cent with minimal slippage on Orca.so or Saber.so.

The best price my friends could get sending fiat from country a to country b recently was 10 euros (with Wise) other options were 30+ euros. Keep in mind, this was for a few thousand. The fee would go up the higher the amount was.