I'd call the comments "sour grapes".
I do question two details in the article:
- They say one way to save is to skip buying "kebabs". To me, a kebab is meat and vegetables on a stick -- not an expensive meal at all; in fact, it's an inexpensive thing to portion out meat for a gathering. Does it mean something else in England?
- They say their friends are "chuffed for them". I have no idea whether that means their friends are pleased at their success, or they're shaking their heads in dismay.