Two down, one to go on the tea bag front. Though there's not a lot of light in the responses.
Tesco replied on Thursday night with a short, succinct summary of how they see the great Teadirect injustice.
I have looked in to this for you in conjunction with our research department and can confirm that the 80 bag box of tea is on a special offer price at the moment.
I hope this helps explain things for you.
So only Sainsburys has yet to reply ... though really none of the firms have engaged with the problem. (Update - Sainsburys did eventually reply on 3 June.)