That wouldn't work, the market would be flooded with Ripmaws until the price fell below the plat cost. If a Ripmaw sold for 1 million gold, but cost 250 plat, everyone with a credit card would jump on the bandwagon until the market was so flooded with the eggs that the price would plummet just so sellers could recover something.
I bet it the egg will be made a world drop with the expansion. That would ensure its gold value stayed high, plat players could get it, and people who don't pay to play have a chance.
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