Whats the cheapest hour rate of a hooker?

That depends on where you go. If you realy want a cheap f**k, just take advantage of those lost drug addicts along the road. But if you want a clean and safe adventure, red light district would be the place to go. They are closing many places in Amsterdam now, but there are still window girls there (and in the other cities still plenty). Just ask for their rate. But hey, if you want to enjoy sex, why go cheap?

A hit of crack and a ball of lint

From what I hear, they don't go by the hour. Don't be bashful, champ. You've just gotta find one, and ask.

just take her out for some drinks

you might be cheaper off if you just go to a bar or club, buy a girl a drink and take her home or to your hotel, just be safe.
and if you wait a little, they might go on sale since they planning on closing down the redlight district here in amsterdam, than after that happens you can get yourself a street hooker for real cheap, one of them crack ho's cause that is what will happen.
let me stop venting on this issue here, i just think it's so damn stupid of them to shut it down, it's part of amsterdam

Go to street prostitution in the following places: Arnhem,Eindhoven, Nijmegen, Heerlen and Utrecht...most of them have a drug addiction ( be carefull use protection!!!!!!!)and are willing to do everything for money, some of these ladies are transgendered or transsexuals....

if you want a cheap (young!)girl, take a "BrEeZah-sletje" that's a young girl (not the right age to buy alcohol!) that does everything as long you buy her a drink. just go to a disco and take a good look!! Don't blame me for their behaviour, it's a thing these girls do, they want to fit in with the rest of their friends.not all girlies are like that in the netherlands!!

At home it will be much cheaper, buy the girl a dinner, maybe a couple of drinks too, and she will feel obliged.
Also safes on the travel costs.