Pu-erh changes with age. If the vendor doesn't list the harvest year, skip it.

Ensure the seller keeps tea in a climate-controlled environment to avoid "storage funk" or mold.

What is your (e.g., $15 for a bag or $100+ for a collector's cake)? Do you prefer earthy/mellow flavors or bright/bitter ones?

Often carry brands like Numi or Rishi . These are functional and organic but lack the complexity of aged cakes.