There's actually some pretty good stuff hidden among the mediocre teas, mostly due to the vendors on their marketplace. A few I would recommend:
Some Sun Moon Lake Ruby 18 from Taiwan that actually has that great Ruby 18 taste.
Yunnan Golden Needle that is actually as shown: very golden and sweet and all needle.
Loose osmanthus flowers that are great for adding to black and oolong teas. Not everyone's thing, but one I am fond of, and the batch I bought of these were very fresh and flavorful.
A tong of 2017 Xiaguan tuos at a reasonable price. Prices on tongs of these seem to have gone up in most places, so it's nice to see a vendor still carrying them at regular prices, although not bargain prices.