Right now most of the tea I drink was purchased at an "ethnic store" (an oriental grocer). I once bought my absolute favorite tea there (Keemun in a yellow can from mainland China), but I have not seen it for many years). Mostly I drink assam or darjeeling or some other tea from India that is available loose by the pound for a good price. Bang for the buck has been my thinking -- but some of these packages are several years old.
Of course it is important to make tea properly. I had not been using enough tea. The guide is to weight tea and use 2.25 grams per 6 ounce cup. Interestingly, for compact and broken teas, this is about a rounded teaspoon. My favorite little blue teapot holds 12 ounces of water, so 4.5 grams of tea is just right for it.
Here are many many places that offer quality tea on the internet. I have been buying tea from Uptons, and like them very well, and they ship for a flat $4.40. I have bought from Peets, and they are OK, but I find their website awkward to get around in. The rest are as of yet untested (by me anyway).
The following thread yields a much longer list:
I am interested in the New Mexico Tea company, but have not ordered yet from him. Some people call his "Grand Keemun" New Mexico Breakfast, which tickled my fancy. They are in Albuquerque, NM. Free shipping for all orders in the USA.
Tom's coffee and tea pages / email@example.com