I'm assuming you're being facetious. A picture of the big dig belongs in the dictionary under the word boondoggle, and proves robomartin's point better than almost any other example could.

Boondoggle would imply it wasn't worth it.

Yes, the Big Dig cost a lot of money. More than expected. It was still worth it.

I can't think of a more apt example to support robomartin's original point. Regrettably.

Which was disastrously over budget