Another one for those that are snapping up Qs from Amazon now they're nice and cheap - A fast telephoto zoom that you can fit in a (not too small) pocket!
Equivalent to roughly 85–250mm on the Q and Q10, and if you upgrade to the Q7 at some point, it works out around 70-200mm, which is a pretty standard range, though getting that for your full frame camera will set you back around ten times this price.
It's from SRS Microsystems with a 2 year guarantee, which is nice, and it's the cheapest I can find. There is another listing from Japan, but the customs charges etc are not included, so it'll most likely cost just as much whilst arriving a lot later.
Oh, and these are new uboxed stock, so most likely just removed from camera and lens kits.