Try www.harborfreight.com for gloves. They have both latex and nitrile (the blue ones) in 100 glove boxes cheaper than anywhere else I have seen. I use them a lot in my shop.

Here's a tip for using their website for the cheapest price on their stuff. Use the search box to find whatever product you're looking for. Write down the # (including the -VGA__ part). Click the "order from printed catalog" link on the home page. Type in the # for the item BUT change the # after the dash and use 0-9 instead. (for example: XXXXX-3VGA should be typed in as XXXXX-0VGA, then XXXXX-1VGA, XXXXX-2VGA, etc.) Each of these items will be put into your shoping cart but you can delete the ones with the higher prices at checkout.

Harbor freight doesn't track the lowest price on their items and automatically give it to you when you order. However, if you follow the tip above you'll get the lowest price on any item they stock. If you don't you get to pay whatever price pops up when you order it.