do you buy a unique domain for your blog in blogspot

[debasis]

in blogspot we can change our new domain for our blog so anyone have tried it yet?
and if so plz show your blog here.thanks

I never heard or Tried for buying Unique Domain for Blog in BlogSpot, and In my View when we are getting Free Blogs service from google and others with nice features then Why to Buy one???

But heard this and saw this also and you can easily do this from your blogger control panel and its cost is $ 10 to $ 15 per Year.
Thanks.