ingrid_STO said:

The pattern that distinguishes a bad batch from an exit is behaviour rather than product.

My experience ordering cross-border ordering internationally: I've ordered from a Canadian pharmacy. Customs can be hit or miss.

Shipping time: 10-21 days
Customs clearance: held for 3 days then released
Quality: Janoshik tested at 99.6% purity

International ordering adds complexity but can save 60-80% compared to US prices. Research your country's import laws first.

AmyNC_wife said:

Right, and one flattering data point from a group buy is not consistency.

Bookmarking. The distinction being drawn above is the one nobody else makes. Adding it to my notes with a link back to this thread.

ingrid_STO said:

The pattern that distinguishes a bad batch from an exit is behaviour rather than product.

I disagree that testing history is decisive. It tells you what a supplier did when they were being watched. Continuity of behaviour under stress — a late shipment, a failed test, a complaint — is more predictive than any run of good results.

One concrete data point for the thread. One habit that pays for itself: post the method alongside the number. A figure without its method cannot be checked, and an unchecked figure is how this community accumulates folklore.

Moderator note: a couple of off-topic posts removed. Report rather than reply if it drifts again.