I just did a quick google search and a 1 ounce tube goes for $3 or less at multiple retailers. I got a tube with my xbow last year and use the wax religiously.... and havent even used 1/4 of the tube... so I'm looking at this tube lasting a good 4 or 5 years. So, how big of a tube do you really need?
So little volume is needed to maintain your string that I have to ask............ what you are doing with it?
The best string/serving wax I've seen is Dalton 200 http://www.daltonarchery.com/Wax.htm
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OHA Life member, NRA member, DVC# ON 452