Sorry about that, dude. I frickin' triple checked, quadruple checked, and double dog dare checked to make sure I got the HSM model. Hope you didn't spend too much.
Mine was about one fiddy. The APO is quite a bit more, but produces better results.
I have bought a few things from
eBay, but only from people with high ratings and tens of thousands of sales. I've been wanting to pull the trigger on a 100mm AIs E 2.8 lens from
KEH or
Adorama, but after spending 450+ on a new tripod and sb-600 this week, I'm gonna wait a while.
Just chalk it up as lesson learned. Buy only AF-S lenses from Nikon or HSM lenses from Sigma for your D40--that is if you want auto focus. Also, only shop online at places like
Adorama,
BHPhotoVideo,
KEH, or Amazon to make sure you aren't being misled. At
Adorama and BH, there is always a "warning" if a lens won't autofocus with the D40/x/60.
Good luck and don't be discouraged, we all get burned every now and again...Like this one time I met this beautiful girl in a bar; pretty eyes, great rack, but she was wearing this scarf around her neck and had a deep raspy voice.....
j/k.