So here it is in 2013, I'm thinking of starting off with the Isis since it the first in the set.
1) Is it really worth my time to try and get to a pyramid or are they all pretty much down to the silver coins? I think I read somewhere after the gold coin is claimed you don't need to crack the riddle to get the silver coin.
2) If I move on to the Ramisis, does that puzzle have a different set of pyramids to get, or is it all one set and any puzzle can get to any pyramid?
3) Will the prize at the pyramid (either real or virtual) be worth enough to bank roll the next puzzle in the series?