Is it all worth it?

Im a big fan of Google, but it does spook me out a bit when I get adverts at the top of my computer screen that speak to me directly, regardless of what I might be doing on the screen at that time.
I haven't done anything 'scooter' today, but nevertheless, a ticker tape ad across the top of my screen caught my attention;

£549 Road Scooter - www.scooter.co.uk - UK's No.1 Selling Scooter - Free Top Box & Screen - 1yrs Warranty

Blimey, I thought.  Thats a brand new scooter for at least 100 quid less than Ive spent on my rebuild!
Is it all really worth it?