Re: Group 2 OOC
Well, the reason I asked was that there is no usual amount - it's down to the individual merchant and what they can afford, and how much protection or accompaniment they feel they need.
I'll give you a choice:
If you're following an established trade route, you can join a caravan. If you do this, you'll need to either buy a wagon or try and hire a place on someone else's. Protection on these journeys is generally either provided by the leader, or by everyone pooling together, so you can have as few guards or assistants as you like.
Alternatively, if you want a bit more flexibility you could put together your own little train - buy a couple of wagons or carts, hire two or three more guards and a couple of drivers.
OR, you could travel light - just the two of you and your horses.
As for Itzal Myn's wage, I believe the last caravan I ran paid the player-character guards 2GP per day, but that was a rather fantastic wage. So, probably 1GP per day would be fair for Myn, less if you think stinking halflings are worth less.