There are at least XX (no details outside 5%?) gold coin owners, who won (more than) enough money to but the Isis2.
It is (very) much for "a puzzle" indeed, but not too much for "the adventure" if you are as hooked as many of the forum members.
Buying one Isis per year costs less than buying a 3-pound lotery ticket each week.
A = the price of a couple of beers in the pub.
B= the number of nights I stayed out of the pub and drank soda from my own fridge while trying to solve riddles.
A x B = half the price of Isis2.
I recently bought a new house (actually it's 2nd hand
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). This makes everything else sound cheap:
Just the tax on the sales transaction is enough to buy me over 100 Isis2 puzzles.
If you did not win gold, and you do like but not love the adventure, and you don't buy lotery tickets or will keep buying them, and you don't go to the pub anyway, and you did not buy a new house, or you are a poor college student, then it's is a very expensive puzzle indeed
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