A few years back (mid-2010s), I used Seeking to meet up with a lady who acted as a tour guide for me.
In my message, I put I was visiting (City) for a few days and was looking for a local who could show me around. I put this out to a few girls on the site and usually got 1-2 that I ended up actually meeting up with. Because it's Seeking, they know your interests go beyond the local hot spots, but you do get to see more than of the city than you might on your own.
As far as the arrangement went, we met up the first day I was there for dinner near my hotel and we got the arrangement part. I think it was about 2-300 local currency per day, plus expenses. It's been a few years, and I'm older now, so expect at least 300 these days.
Mind you, this was in Canada and Germany, fairly safe countries, not sure if I'd do this in certain parts of the world.
These days I use a site called
SugarDaddyMeet.com (SDM) mostly (it's pretty popular in Canada) but
Seeking is still the best bet for overseas, and it has a much larger global membership.