Kookoo is our effort to get into the US market. In this regard, just last week, we launched a customized product for US, http://getkookoo.com. This is only for the US market and a completely redesigned product. We spent a lot of time on UX and you can get started with a call center for your business in 2 minutes(we timed :))
To make a differentiation in the cloud call center space, we decided to come up with a very distinct pricing scheme and feature set. We decided not to charge for agent rentals and charge only for calls/min. Sort of like a Twilio for call centers. Just sign up and start using. Unlimited agents.
We also included live chat and a built in contact management system to make it a complete package for SMBs in the US. We currently have an introductory price of $19.9/month.