Actually I have been following the prices of these items on eBay and have seen them go for more money in the photography auctions than some in other auctions that never got a single bid. There is one offered now for $379 with no bids. That is lower than recent prices paid in the photography auctions. Before Bob's article, I paid more than $250 for mine as did one of his students and I think Bob himself paid more than $250. More in the range of $400-$500. I only posted this notice for informational purposes, not really to spark a discussion. But I do find the instrument extremely useful.