You are talking about the orange Ultimate Grunil right? What region are you in? I feel your pain, there simply sint enough orange items in circulation to be able to buy them. Praying for dropd seems to be the only way to get a decent orange. Its unfotunate. I would love to hear any advice from anyone on thsi topic.
I'm on the American server, mediah, there are simply no items in shakatu and nowhere to buy!
Yep the drop rate in BDM is hilarious, resulting in a dead market. Grinding and praying to RNGesus does not help, too. Almost three weeks at Cron Castle, 4 - 6 hours every day, not even a yellow drop...