So I could not resist doing the math. The World Health Organization says that most men make a donation of 1.5-6.8 milliliters of cum when they blow. There are 3785 milliliters to a gallon. That means 556-2523 cums per gallon. "Many" is more than two, so I will use 3. That means 1668-7569 cums. Depending on the menu item selected, each cum would cost between $100-$160. For a "big load" guy, that would cost $166,800-$266,880 to fill a 3 gallon jug. For a "wee load" guy, $756,900-$1,211,040 to fill a 3 gallon jug. Must have been awesome K-girls in that spa and I am sorry to have never gone there....
I suspect most active mongers are going to an AMP once a week or every two weeks. So 25-50 times per year. Big loaders are dropping off 170-340 milliliters per year. Wee loaders 37-75 milliliters per year. That is just 2.5-11.5 oz. per year at a cost of $2500-$8000 per year. Viewed in these terms, where else can you have a hobby with such great fun for the amount spent? I suggest...almost nowhere. Now, I will never look at a 1 gallon milk jug the same way.....