VoIP price comparison

I just found an interesting website where apparently mainly Dellmont providers are listed, including individual price comparison and warnings Preiserhoehungen. You can also leave Preisaenderungsalerts e-mail.

http://voipratetracker.com/


Following there were already eternal: http://progx.ch/home-voip-prixbetamax-1-1-0.html

The two are also quite some time:
http://backsla.sh/betamax

http://www.telefonsparbuch.de/tmpl/c...rofi/index.htm
(Not all Dell Monts, for other vendors)


and again Dellmont Price Comparison
http://key2door.com/betamax/ .

Looks similar to the backsla.sh page (the author also points out that he was inspired by it). In total there are 61 Dellmont offshoot listed. Whether all or is there more?