Purchasing airliner pictures.
 

A couple of years ago I purchased some pics from airliners.net
I now note there is not the option to purchase prints.
Any other good sights to buy from?

Probably because airliners.net only give you a small percentage of the money. You can contact Photographers directly, I'm sure they will be more than willing to sell there photos. I'd made an amazing 40 cents on two photos thanks to airliners.net. As soon as I took them off the site I sold a picture for £25 with-in a week. Obviously not alot but beats airliners.net ripping the photographers off.

Take a look at Slickstock, The Flightcollection, Aviation Trade , Exavia and Avimage to name but a few.
Between them, they include digital, slide, postcards etc.

I don't have a) very many pics, or b) any of outstanding quality but all mine are free, with no strings attached, at:
BREN'S AND RUTH'S AIRCRAFT PHOTOS :: Fotopic.Net

Try Air Team Images AirTeamImages.com - Aviation and Aerospace Image Library
Excellent database and all available as prints.