I'd almost rather pay for the gray mop/pave bracelet regular price than pay 30% extra for just the gray mop. But I am still waiting to see if they do decide to make the gray mop 5 motif for the regular collection or as a limited offer. There are examples like the onyx in white gold where they offered pieces at a specific location for a limited time. I think if we do any special orders it comes with the risk of the piece eventually being added to the regular line, and that's part of my hesitation of doing any SOs.
I dunno how much others paid. But mine was almost 50% premium compared to MOP.