moasaemma; you can send me an email; birth [at] majikfaerie [dot] com
As to expenses for travel, generally I expect my expenses to be covered for a birth, including travel, no matter where it is. my gas money is calculated in my expenses for a birth in my area just as travel expenses for a birth elsewhere. But I don't charge a lot, over my expenses, and for women in asia (where I usually travel to), the cost of plane tickets and expenses still work out not much more than hiring a homebirth MW in Sydney, which is around double what the MWs in my area charge.
A couple of times I attended births in Asia when I was there anyway, so it worked out well.