There are moments when you should abandon the fast path entirely. If you see any of these, walk away:

• The seller can't or won't provide documentation. That's the single biggest red flag. A legitimate seller will understand your need to verify.
• The price seems too good to be true. If a product is significantly cheaper than everywhere else, ask why. Often, it's because it's counterfeit or non-compliant.
• The packaging is missing labels or looks off. If the warning labels are missing or the printing looks cheap, it's likely not a legitimate product.
• The seller pressures you to decide quickly. Legitimate sellers don't rush you. High-pressure tactics are a sign they're hiding something.

Trust your gut. If something feels off, it probably is.