nostr.wine actually charges quite a chunky fee for access. 18888 satoshis is a lot of zaps.
Discussion
Worth it
They got several servers around the world. They got the "filter" thing that allows you to reach people you follow even if they are using other relays. And thay also broadcast your notes to major public relays.
You literally can use only nostr.wine and will be fine. Good for traffic and speed.