Buy elvolving ring 3 or not?

But I cant tell if the ring will go up or down in price and the 3rd ring is almost better than ring 1 and 2 together (4 all stat difference, dont care about the hp)

DO WHAT YOUR HEART DESIRES.

No, wait for next week. I thought the 10 atk ring would be worth a lot, but at least when it became trade-able in Khaini it was only like... 100m.