As such I have the time and resources to explore this world before making up my mind. I own my own business which is doing well and I can have several weeks holiday in a year.
Now if I do make the effort to meet a few ladies will it make me a sex tourist?
"Before making up your mind?" Perhaps not. It is always good to remember that the lady has some say in the matter as well. If it turns out the one you decide upon has herself decided she does not wish to be in such a competition, you would be back to square one.
From your previous description of your visit, it seems you are already pretty well matched with that young lady. If so, you might consider just thanking your lucky stars that it was so easy and see where the relationship takes you. Should it not work out for some reason, don't worry--there are plenty more out there.
The other two would be far more likely to wait to meet you now than to wait and be among the competition later; if they go another direction in the mean time, there are many others in a reasonable age range for you.
On the other hand, if there are aspects to the first young lady that were not apparent from your post, you might have some sort of reservations about her. That would of course be quite different altogether.
I think you place far too much emphasis on the "interest being shown" to you. That carries no obligations with it, but it can easily become a very slippery slope down which you can slide away from a real life relationship with a potential long term mate.
Trust me on this one--if you have found a lady who is not materialistic in Kyiv, that is an accomplishment not to be taken lightly.
As for being a "sex tourist"--doesn't that depend upon how serious you are about actually finding a mate, and to what extent you are "auditioning" them between the sheets?