Crazy time on Omen Mu and crazy prices for uber sets !
Prices changed and now are:

90 Goblin Gold Coins=Tier 1 set+2 excellent options
160 Goblin Gold Coins=Semi Tier2 set+2 excellent options
200 Goblin Gold Coins=Tier 2 set+2 excellent options
260 Goblin Gold Coins=Tier3 set+2 excellent options
320 Goblin Gold Coins=Tier 4 set+2 excellent options

Promotion is valid from 30.03 to 6.04
Best Regards,Mu Omen Team !