Well, I just bought a pair and there were other pairs available. In the past, doing tickets at my old club, they'd dump all their singles on us, which we'd happily take. Given the tickets are ludicrously expensive, I doubt I would have done that this time, if they decided not to hawk them out to all and sundry, that is.
I'm with Blucherquin. This is outstandingly poor by the RFU.
I have neither the time nor energy to scamper round the seat availability map on the website, but I guess there can't be more than say, fifty seats in total that are available.
If they have had some tickets returned, what are they supposed to do with those tickets?
Sorry, but to call it outstandingly poor is simply nonsense.