Tcl is an awesome language for developing cross-platform desktop apps in, and Tk bindings are everywhere. I use Tk as the foundation for Mac (and soon Windows) apps written in Python and Perl as well as Tcl.
Don't pay for hosting. Run your own box on a static IP. I've done it for a decade for the 12+ sites my business operates for its various brands. The traffic is fairly light, sites are mostly static, but the cost savings add up.
Tcl's "minor" or point releases are bigger than most languages'. 8.6 has been in development for about four years. 8.5 was also in development at least that long. Contrast Python, which does a point release every 18 months or so.