Where to buy plastic cups with lids?

[Pei]

What's my best bet for finding 9 oz plastic cups with lids, like this?

http://letsgogreen.biz/pages/utensils...

The exact shape isn't important, but I often bring drinks or desserts to parties and would like to be able to bring them in attractive cups that people can just take and toss.

I tried a local cash and carry but they only had 12oz cups. Costco probably wouldn't sell me under three hundred, and I only need a sleeve of 50 or 100 max. Sur La Table had nothing disposable. I'm in San Francisco; is my only hope mail order?

[smtucker]

Around here the chain iParty sometimes carries them. Another option is to sweet talk your favorite take out spot to sell you what you need.

[mollygirl]

Have you tried Smart & Final? Or even something like Party City.

[The Ranger]

Smart & Final would definitely have them, or certainly be able to purchase the size you need.

Party City doesn't sell lids, unfortunately. They have all size cups and colors and "makes" (plastic/wax/paper) but lids just aren't something they deal in.