Has anyone dealt with vendor shipping speed comparison?

InsuranceTom said:

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

Shipping damage protocol for vendor vetting orders: if your package arrives with visible damage, temperature excursion, or broken vials:

• Photograph EVERYTHING before discarding packaging
• Note the temperature of the cold pack (liquid = possibly too warm)
• Contact the vendor within 24 hours with photos
• Request a replacement shipment or refund
• Do NOT use potentially compromised medication

Reputable vendors will replace damaged shipments without argument. If they push back, that's a red flag about the vendor.

Following on from VendorMark — and this may be the naive question:

What a vetting checklist should actually contain, as opposed to a list of things that are easy to fake?

dave_SLC said:

Shipping damage protocol for vendor vetting orders: if your package arrives with visible damage, temperature excursion, or broken vials: Photograph…

Coming at dave_SLC’s question from a different direction. The variables that decide how a cross-border order goes are declaration wording, the destination country's import rules for prescription medicines, and whether the shipment looks commercial. Personal-import allowances exist in some jurisdictions and not in others, and where they exist they are usually conditional on a prescription and a quantity limit. The failure mode is normally a seizure notice rather than anything worse, and a reshipment policy is the thing worth confirming before ordering rather than after.

Closing the loop on my own question.

Went back through my own correspondence with an earlier supplier and the warning signs were all there in the replies, weeks before the quality changed. I was reading the product and not the behaviour.

KevinCompounds said:

The variables that decide how a cross-border order goes are declaration wording, the destination country's import rules for prescription medicines,…

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