I'm hoping to purchase one myself for a lineup I have planned, though there's no rush for me since I'm not particular about the date. Here's hoping that they might add it during one of the Halloweaster Egg restocks today so you can get the time and date you want.
Ngl its kinda cool to have birthstones out of their month. I've thought about doing that before but I don't have that much tbt to spend every (not common) time it happens. Also like lineups could be slightly altered since a stone wouldn't be locked to its set month.