Trying to pick between Vipebio (vipebio.com) and a couple other vendors, so I'm going off their listed catalog, published prices, and whatever shipping info they post. Stuff I can't sort out from what I can find online: Does every item in the catalog actually list research-use identifiers like CAS, purity, form, and size, or are some entries half-filled?
Can you see lot-specific COAs before ordering, and do those show method, date, and the testing lab? Are the posted prices current, and do they include shipping, taxes, handling? Any minimum order or bulk tiers?
Where do they ship from, which carriers, how long, and is there cold-chain or special packaging? Tracking, reship, and return policies stated anywhere? And where are they physically located and operated from, and does that entity/location stay consistent across the site and documents?