MicrostockGroup

The only "people" images with model release I own are self portraits...
I'm planning to pay some models and shoot some portraits during the next few months.

Have you ever paid your models ? How much ?
I'm planning to spend $30 to $35 for 1 afternoon, which is a fair price in Romania. What do you think about it ?

I'm also planning to do "TFP shoots", like shooting a friend's dental clinic for free, and giving him HD images to use in his advertising material.
I was chatting with him yesterday, and I thought about paying for an advertising in a local newspaper, as a "TFP photographer" looking for offices, clinics, restaurants and clubs to shoot for free.
I think it could be really profitable to be known in a city as a "TFP photographer" as you could easily get a lot of high selling images per month.
Any advice about that ?