TGV has said it all about this product, but I just wanted to say I agree...it is worth the price, for the added comfort, esp. on long flights. I have many friends in BKK, and living in London, they routinely use this as a comfortable way to travel for a great price (about 40% less than BA's world traveller plus). And, if you are lucky enough to get seats up in the nose of a 747, even better...so quiet, and spacious!
I know people who work at EVA in the UK, and they said the product is set to continue...but not on every aircraft (regional there is less mkt demand for it).
Enjoy!