There are different categories of cammers that escort.
1. Cammers who have no intention of escorting and just tick the box to increase visibility.
2. Cammers who really don't want to escort and discourage it by sky high prices eg 1000/hour.
3. Cammers who claim to escort but only if you first pay up for their camming. I've never tried one, so I don't know if they follow through with a booking or it's just a scam to drum up business.
4. Cammers who genuinely escort some of the time.
It shouldn't be frustrating to weed them out. Check if they have decent and recent feedback for escort services. Then cross-check if they're reviewed here. The genuine escorts should be.