TM violation .. also there is no concept like 'adsenseTips' or 'adsenseGuide' so I wud say less than reg fee
Would have to go with reg fee also... it's not something people would write as a typo, and probably most site owners would be concerned about violating Google's trademarks, especially when they've taken a heavy stance against such actions in the past.
$0 , Huge Trademark issue. Iman, I dont think it will receive any typo traffic. People type "s" instead of "z". Nobody will type "z" instead of "s". And also the site is adsense.com, not googleadsense.com .
It's very valuable, if you're somebody who wants to get attention by having Google sue you over TM infringement. Otherwise, less than reg. fee.