It's the service we're paying for, they don't last that long, and you know, I think you hit the nail on the head, just do your own mani/pedis. They're not hard at all. I treated myself to acrylics (trying to grow my nails out) and a pedi for my birthday last month, have had one fill, and have been doing my feet myself. I found a nifty all-in-one foot brush, file, pumice and one more silver thing that gets off dead skin, for under $3 at Target, and it works great.
If you want something to soften your feet mix up a cup of raw (turbinado) sugar or coarse sea salt, half a cup (adjust it to get it the consistency you want) olive oil, and a teaspoon of vanilla or other extract you like, and rub it all over your feet and wash/rinse after you've soaked your feet and scrubbed the dead skin off. It will leave your feet so soft and works on dry elbows and knees as well.
My almost 11 year old granddaughter and I just gave each other pedicures last night, we have cool turquoise blue glittery polish on, and it was fun : )