Vendor shipping speed comparison — who delivers fastest?

This one has a reasonably settled answer, so here it is. The pattern that distinguishes a bad batch from an exit is behaviour rather than product. A bad batch comes with communication, a reshipment offer and a batch number. An exit comes with slower replies, pressure toward less reversible payment methods, sudden discounting, and the same reassurance repeated without any new information. The product tells you less than the correspondence does.

Dr.NutriCornell said:

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

Right, and one flattering data point from a group buy is not consistency. Consistency means separate batches, separately commissioned, over months.

If somebody has the primary source to hand I would rather cite it than paraphrase it.

PharmHunterJen said:

Living somewhere the domestic route does not exist, which makes most of the advice on this board inapplicable to me.

Agreed, with a caveat about community reputation: it is a lagging indicator. Reports arrive weeks after orders, so a supplier can look excellent for a month after quality has already changed.

Correct me if the detail matters more than I have assumed.

Clinical perspective, offered as context rather than as advice.

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 97.4% purity

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