True to its name, Ten Dollar Fonts offers new fonts every week with licenses that only cost $10. The a la carte pricing is a huge cost-saving alternative for designers who can't afford pricey font packages, and because the site also works as a distributor for tiny type foundries, smaller projects see a much wider release.
Licenses for personal use are $10, while a commercial license is a still-reasonable $20.
Pincambrella
Modula Mono