Very sad to hear about the soylentcommunity1 deactivation. Without that coupon, is there any reason to order direct from Soylent rather than utilizing the 15% Subscribe & Save discount on Amazon? I cancelled my Amazon subscriptions a few days ago because Amazon started charging sales tax in my state. I was planning on ordering directly from Soylent instead, but without this coupon Amazon still seems like the better option even with sales tax. But now I have to wait another month for my next Subscribe & Save on Amazon.
EDIT: I did some more research and it appears that using Amazon Prime Pantry rather than Subscribe & Save seems to be the best option, as long as you're okay with ordering in multiples of 3 boxes, which is the most that can fix in each Prime Pantry box. Shipping on each Prime Pantry box is $6, or $2 per Soylent box. And each Prime Pantry box would have some free space to order other small stuff.
Here are the stats for Coffiest:
Soylent.com non-subscription: $39.00
Soylent.com subscription: $37.05
Amazon non-subscription: $39.00 + tax
Amazon 5% subscribe & save: $37.05 + tax
Amazon 15% subscribe & save: $33.15 + tax
Amazon Prime Pantry (multiples of 3 boxes only): $30.97 + $2 shipping = $32.97 + tax
Also it looks like Amazon can somehow fit 10 Coffiest boxes in 3 Prime Pantry boxes... no idea how that's supposed to work, but if you're willing to order 10, that would take the shipping down even further.