the practicality of working an area has to do with the number of hairs to be removed, the spacing of those hairs, the thickness of the hairs, depth of the follicles, the rate of hairs per hour the practitioner you have removing the hairs can work, and many more factors.
This is why we are always saying that we can't tell you how much something will cost, or how long it will take. If I saw the treatment area, I could hazard a guess, but even then, it would not be as good as the guess I would have if I were actually able to work on you to see what all the factors assembled work out to be.
now this is the part where I tell you that I have worked this area before, and the clients seem to be pleased with the results.
