Before anyone buys this software, thinking that they are going to get the voice that was used in the sample, note that the program comes with no voices and uses the TTS voices that come with Windows (Mike, Mary, Sam). The program is "compatible with the incredibly natural-sounding RealSpeak speech modules", which means that you can buy these nicer sounding voices, as an option. This is true of just about any Windows SAPI5 TTS program - you can buy additional voices elsewhere.
Although $5 is probably a good price for this program, with only the default SAPI5 voices, you may as well save the $5 and get one of the free TTS programs that are available. One that I would recommend is called DSpeech and can be found here
http://dimio.altervista.org/eng/. It also allows you to create WAV/MP3 files.
If you later wish to buy additional, better sounding TTS voices, the best place that I know of is Nextup.com, which sells AT&T, NeoSpeech, Acapela and RealSpeak voices (they may also still sell Cepstral voices, but they aren't listed on the web page).