well have you tried this one? http://www.nadzrulsystem.com/Study Centre/ebooks/advermarket/HighestAppreciatingKeywords.pdf sorry for the long url.. but its worth it..
LOL you call that top paying keywords? ?? http://rapidshare.com/files/25043944/4000_Adsense_Keywords.pdf Download this it has 4000 Adsense Keywords Enjoy
no? lol.. its not even mine - im just sharin some of the top paying keywords. lol.. zerosleep.. is that even legal to download something from rapidshare... theyre like.. ya know.. rapidshare.. sort of peer to peer file sharing
huh! I have uploaded it to Rapidshare.com for you'll download it if you want take it or else leave it
The list is about 6-8 months old so there might be a little bit of deflection in the pay per click but not very much though
price is dynamic.. meanwhile, the higher price of ads, the more severe competitive it is. and you won't get much ultimately. why not try the long tail theory.