I retail what they need. Not for the sake of retailing. I work from home so I'm not sure it would work, I have limited space, and anyway I'm not trying to be a mini-shop! So I keep it simple.
I sell what I use and use what I sell. That is:
Files & Buffers (necessary items)
Solar Oil (for the recommended daily use)
SolarSilk & SolarButter (for dry/very dry skin)
Non Acetone polish remover (recommended for use with enhancement products)
OPI Nail Envy (cos it's the only one I've ever found that worked)
Don't want to supply them with products that will help them do my job though, just want to know what kind of products to retail for home maintainence.
So like things to help clients keep their nail extensions looking good between a RB, that kind of thing.