I think I got away with it.
"I ordered a new monitor."
"Why, what's wrong with the one you've got?" (11-year old daughter).
"Nothing, I just wanted a bigger one."
"But that's a waste of money."
"Why?"
"You could spend it on food."
"That's already covered."
"Isn't the one you've got big enough?" (Wife).
"It's ok, but on the big one I'll be able to have Dreamweaver and Photoshop open at the same time."
Wife grimaces.
"It's good! It'll save loads of time when I'm working!"
Wife walks away.
"Don't you want to know how much it cost?"
"No!" (laughing).
"Good, I wasn't going to tell you anyway."
Then I discussed the merits with my daughter of buying stuff instead of watching it vanish anyway on frippary and kipple and ending up with nothing to show for it.
Then I was sucked into discussing a holiday in Spain with the family. "£150 for a passport for the cat!" I cried after looking it up.
And I was asked if I'd be able to sell the current monitor. "Oh yes, it's worth a few bob, and Paul keeps badgering me to sell it to him..."
Dog-fighting Albatrosses is a bit easier.