Summer Summer Go Away... Spring Will Stay Another Day!

That's a great deal. Hope it works and generates some serious interest in the show coz, as you say, this is a very good show. (In fact it's more than "very good". I don't think there are superlatives sufficient to describe how frantastic this show is.)
And the on stage seats are a very special experience.

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I had an on-stage seat (front row, middle, stage right) for the Broadway production last summer and it was fantastic. I couldn't resist dressing the part in brown trousers and waistcoat, shirt buttoned to the top, black boots (at least I wasn't in knickerbockers!). It was a real thrill to look out at the audience before the show started and equally thrilling to think that people didn't know if I was likely to jump out of my seat and join in anytime. I showed great restraint for most of the show by not singing along but did let myself go at the end of both acts! I might be tempted to do it again at the Novello.

As great as it is they are doing this offer, how can this affect their survival chances? selling a very small number of tickets that were cheap anyway at rock bottom prices? Surely a more general offer on top price, or lower the prices in general (a la Avenue Q).