Just read about ReValver 4 being $99, new engine & a Gig mode to switch seemlessly between presets. Something to keep an eye out for. That kind of thing would be good in the app world too I would think. People were getting decent sound with IRs on the previous version. I expect every guitar sim to nail it from now on and be affordable too. No excuses.

TSEx50 has a retail version for like $20 and was one of the best free sims and now comes with some cabinets so highly recommend trying that out if you want a good cheap VST. I think you can still get the free ones, x30 & x50 are both good if you have decent cab IRs to load and don't mind adding more plugins for every chorus/delay/reverb effect, etc.