There are a few different versions of exPressit available

exPressit SE2.1 is a free download for Windows PC that is available from Pressit Download. It is a full program, no trial period or watermarks appearing on your design. 

exPressit SE3.0 is an updated version of the 2.1 version. It is a bugfixed version and is slightly more stable on certain computers and with certain printers. This is available as a pay download from Pressit.com

exPressit SX3.0 is the extended version of the software. Not only does it have all the fixes that SE3.0 had in it, it also has a number of other options that are not available in the SE version of the software. It is also available for download at Pressit.com

For mac users we recommend that they try out liteLabel, a free download from Pressit Download, or DiscLabel (It's bigger brother) from the same site.

Reviews of both exPressit SE2.1 and liteLabel can be found at Disc-Info.com