If YYE would actually stock them, who knows what the price would be. Other yoyo stores where MYY may be found have prices which are pretty darn high ($30-50) compared to online sales outlets which sell them directly from China for around $10 each.
Simply from this point, if they were stocked here, and they were anything above the lowest prices available, I’d much rather wait a couple weeks for it.
Such prices could also bring to question the prices of the bearings YYE may have to replace to avoid legal issues with Dif-e-yo as well as the labor required to do such replacements. It would be an inconvenience.