How often do Sigma Lenses go on sale? Are they they type of thing that seems like everyone has them for the same price?
Looking at the Sigma 150-500mm. I was not going to buy until the spring, but I found one on sale... for about $101 off. Everyone is running them at $1069, but Abe's has them for $968, no tax, free shipping.
Is it the kind of thing I can find when I am really in the market for it, or should I grab it before it goes away since I might not find this kind of deal again.


I must have been really good this year! 
