Yes, you can use Adobe Connect. Yes, you can change the host from one person to another. To purchase Adobe Connect you will want to either reach out to Adobe directly or contact a Reseller in your area (Adobe should help you find one near by).
Adobe Conenct is now marketed to specific markets and has dedicated sales teams focussed on Government and eLearning (large Universities). Commercial accounts do not have an Adobe sales force now (recent change). Depending on your country (Adobe Connect is not sold in every country), you can use this site to purchase Adobe Connect: http://www.adobe.com/products/adobeconnect.html
Resellers and partners are the preferred option as well. You can also contact your software reseller and see if they handle Adobe Connect sales. Adobe has decided to focus the sales efforts on Government and eLearning markets. Partners will market to the commerical customers.
Large Universities who have an Adobe Sales Rep would qualify for education pricing.