First I pay same as any 1mbps client pays no more no less. I was in your situation once but since I deploy wireless links I did exactly that. I wanted to get the 10mb link so I setup the 1mb first to test the waters and I was shocked. I thought the speeds would go to sub 1mb speeds but it got better especially after Eassy landed. I believe the bottleneck if my wireless link (17km) through NRB. I will be upgrading to better gear soon and I will post my results. I have guys connected to KDN on fiber paying 3k a month through a KDN installer and The get better speeds than I do. About Zuku offering only 1mbps links on wimax its just a matter of what speeds/clients they want to achieve on their wireless Base stations. If they want to offer 5mbps on wimax they can do that but have less clients per station. KDN uses alvarion's VL running on 5ghz (at least most guys on 5mbps) but you will not get the full speed not to mention interference on these frequency.