Well I decided to make my own water bottle holder. I didn't like any of the ones on the market, because I wanted inside of my saddle bag where it's easy to grab while on the bike. I took a piece of 1/4" plexiglass and used tee nuts to attach a water bottle cage that is used for bicycles. I used Velcro to attach the plexiglass to the inside of the bag. The biggest cost was the cage because I wanted one that the bottle slides in and out easy so the whole thing was about $40.
