Years ago, I ordered 2000 tubes and caps from a place and then sent them out to folks on Hunt America. Kept ~100 for my own use. 100 tubes and caps will last a very long time.

After that, tubes became all the rage. I'm glad that Lane and others sell them... I hate counting the dern things.

Here are the tubes I ordered http://www.eandkscientific.com/produ...roductid=16265 . They've increased in price around $15/1000 since then.