Having not role-played since the early 90s, I am in the process of setting up a D&D 5th ed. campaign with a group of old friends.

I have a concept for the world I want it to take place in and have been playing with CC3 and FT3, but don't have the time and expertise to create the maps I would like to have for this new campaign.

Could someone give me an idea of reasonable price ranges for two maps:

1) one "world" or "known world" map

2) one more detailed map of the main land mass and kingdoms where most of the action will take place.

I think the ideal approach would be to pay to use someones existing map(s) with some optimizations.

I image the process would be:

(1) a telephone call or exchange of e-mail to flesh out the kind of world I'm interested in
(2) a number of watermarked, low-res sample images of maps sent, from which I would choose one to have some modifications made
(3) one or two iterations for minor change requests (e.g. name changes, political boundary changes)

It would also be nice if I could have a file that I can edit in CC3 myself.

I have no problem with the final work being resold. I just want something nice and functional for my campaign.