anna.melb_AU said:

Prices dramatically below market are the strongest single signal, and the reason is arithmetic rather than suspicion.

International shipping tracking for cross-border ordering orders: my experience with customs in the US when ordering from overseas:

Required FDA import alert review, delayed 10 days.

Tips: always include a copy of your prescription, declare medication properly on customs forms, keep quantities reasonable (personal use = 3 month supply max), and use a vendor who has experience shipping to your country.

Dr.ReproEndo said:

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

Genuinely useful, thank you. I had the facts and not the framework.

anna.melb_AU said:

Prices dramatically below market are the strongest single signal, and the reason is arithmetic rather than suspicion.

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.

Adding the numbers, since they settle part of this. 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: the sourcing question belongs in the vendor section and has been split out. Thread quality here is what the rules are for. Keep it up.