I noticed these in Asda earlier and they had hundreds of boxes they were still putting out on display.
6 x stemmed wine glass - looks about 175ml/ 1/4 bottle
6 x whisky tumbler style glass
6 x tall/hi ball/long drink glass - I would guess about 500ml/ 1/2 pint
Got to be a good deal for Christmas parties, and probably even easier than freebie glass hire, as you can pick them up when you are shopping and don't need to return them.
Its instore only, so the link just takes you to the Asda site, and the picture is just one i added as I dislike listings without pictures.