During the last few years, I have purchased a number of products from Healthpost. They have lots of products I haven't seen anywhere else and the shipping is reasonable. One of the products I use a lot (some relatives told me about it) is the Tui warming balm, for aches and pains.
The Healthpost people donate something from each sale to charity (you get the choice, at checkout, of two different charities). One order did not arrive; they were nice about it and they replaced it straight away. No complaints about them, so far, and I recommend them.