This is a heads-up, not a conclusion. Everything I am confident about is below; everything I am not is marked.
One order arrived in nine days, one was held at the border for a fortnight, and one came back with a seizure notice. Same route, same declaration wording.
Cold chain is the underrated risk on long routes. A shipment held at a border for a week has had a temperature excursion whether or not it arrives.
If your experience contradicts this, say so in the thread — I would rather be corrected here than have people act on a warning that does not hold.
amsterdam_pete said:One order arrived in nine days, one was held at the border for a fortnight, and one came back with a seizure notice.
Right, and one flattering data point from a group buy is not consistency. Consistency means separate batches, separately commissioned, over months.
amsterdam_pete said:One order arrived in nine days, one was held at the border for a fortnight, and one came back with a seizure notice.
Filing a mild objection. Mild because I might be wrong; an objection because nobody has addressed the case that does not fit. Import rules are jurisdiction-specific and this board keeps giving US-shaped answers to non-US questions. What is a personal-import allowance in one country is a controlled-import offence in another.
If somebody has the primary source to hand I would rather cite it than paraphrase it.
Sigma-Aldrich — Research-Grade Standards
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Shop Reference StandardsShort answer first, then the reasoning. Prices dramatically below market are the strongest single signal, and the reason is arithmetic rather than suspicion. Synthesis, testing, and cold-chain shipping have floors. A price well under the floor means something was skipped, and the two things that get skipped are testing and content.
PeptideChemSF said:Right, and one flattering data point from a group buy is not consistency.
Same pattern here, and in the same order. Nothing to add that would improve it.