Maybe Coinbase pro charges less than Coinbase but I use Coinbase on my laptop. Changed $1,000 on Coinbase to Tether. Fee $15 which sucks. When I swapped it $20 was taken nor $15 which sucked even more. Sent to Bitmart as USDT another $8. So it cost me $28 and $972 of my $1,000 sent. All fees were from Coinbase. I previewed XLM on Coinbase and they wanted the same $15 to swap it from US dollars to XLM.