Richard Schultz 1966 side table question..  

Hi everyone. I could just kick myself at the moment! As I was walking through a flea market today I saw this table that caught my eye. I thought that I had seen it before, but didn't bother doing much about it and went on my way. Well, to my surprise, I found out it is a Richard Schultz 1966 side table. It's approx 18" square and has a white frame with the blue glass on top. I'm hoping that the person that had it will have it next time around, so my question is... is this a hard to find item? Also, what would a fair price be? Thanks!