Melanotanexpress shipping timeline origin and tracking updates

Melanotanexpress's prices caught my eye while I was comparing suppliers, so I looked at their public listing and site before deciding anything. For melanotanexpress.com: what's actually in the product catalog, and does each product line show batch or lot identifiers? Are there certificates of analysis for current lots with the purity method and lab source, and can you match those COAs to the batches listed? How are prices set — per vial, bulk tiers, minimums — and is shipping included or extra? What shipping origins, carriers, timelines, and packaging or temperature controls do they state for domestic versus international? Where are they actually located or operating from, and what customs or import paperwork comes with research shipments? Just trying to compare them fairly against other vendors before I decide.