If you go to Mephisto's US site find your way to a page with the "Stockists" drop down. Was curious and just checked...Supreme Seed Bank and Multiverse Beans have several 3 packs in stock, and Harvest Mutual has a handful of 7 packs in stock. Sealed packs, no Meph math. Freebies, an extra bean in a pack, stickers, or other swag should be considered ymmv so there's no disappointment.
edit: as Bill.de.Cat stated, go register on their site. Enter your shipping and billing address if possible. This way when there's a store opening you'll STILL need to put in your payment method, but save time by NOT entering all that other stuff. Twice. Things move fast when the store's open, except for reloading. If something (and then another, etc) is no longer available by check out or even as you are completing check out you can get in to a cart editing loop that leaves you with nothing. For me it's been some of maddening, frustrating, thrilling, fun times lol
Here's hoping you find something you want!