Is there easy way for Gil?

[Vaer]

If they hunt a lot or warp around a lot, then the teleportation fees would add up quickly compared to how much they get per hour. It's better to just attack the Halgai and Manzasiri in and farm it for an hour, but that still might be too much effort.

That sounds like they would be doing that already even if they didn't bother with retainers?

You just have to go back once an hour using return or free destination. If you are doing roulettes/PF just sit at the bell and check when you get out.

Farming is good if you have a lot of time but the ventures you can literally just afk at the bell do other stuff IRL and come back to send them out.