Yes I think I can do the math. 30 miles round trip. 30 minutes highway driving, at least an hour in the city. 

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My LDS you can fill your tanks 24/7. He has an honor system. Touch screen computer where you enter the gas and products and pay with paypal any time of day 365 days a year. Owner will show you how to work the cascade system to fill your own tanks with either banked nitrox, oxygen or air.
Amigos Fort White Florida Dive Center.
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I am lucky that my LDS can usually smoke any online price, including gray market and group buyers like LeisurePro, especially on large ticket items like regs, bc's, wings, etc.
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