OK... can I post a non-deal or will I get eviscerated?

LHR - JFK in A class (ANN8S4Z1) for £2,763, no special dates but I found these in June/July.

The reason I mention it is that you can get a free one-way upgrade into A when booking in R class (so you pay R class both ways and get A one way). However, R class on the same dates (e.g., out 29 June, back 1 July) is £4,932.

(The promotion is also available, at better prices, and makes some sense, ex-DUB).

Change and cancellation fees are the same in R and A.