Although it depends where you sit at Covent Garden, as the pdf shows. You can get 4 hours of Tristan and Isolde for a very reasonable £30. Much better than a ticket at the Emirates.
and you can get MRJnr food for around the same price (£40) at one of his other restaurants in London (set lunch at one of his hotel dining rooms), but the whole deal at La Gavroche is around the same price as the whole deal at the Royal Opera.
Personally, i would pay £200 NOT to have to attend an Opera at ROH, (having done so in the past and hated the experience every time)