Here's an interesting, though Hybrid-type, plan that runs off of Sprint. ReadyLink, web and unlimited text are options, with PCS-PCS and 6pm nights\weekends included. Click the title to go to the eBay page for it.
For what you get the plan is pretty nice. I just found out that it has full roaming, just like the Fair&Flexible America contract plans. For $50 plus taxes ($5.99 so about $56 total) you get 300 minutes (Worth maybe $35) with unlimited nights\weekends starting at 6 ($10 addon in SPCS) and free PCS-to-PCS calling ($5 extra with Sprint). So You get $50 plus taxes worth of service for...surprise since we're talking no contract service here...$50 plus taxes!
Plus you can get ReadyLink, web and text messaging as addons. You'll probably need to bring your own phone though.
Notes to remember are that 411 and international direct dialing are prohibited (can cause account suspensions) and text and web are all-or-nothing (either you pay for unlimited or you get none). The plans also have taxes outside of the normal charges. I wasn't able to get the tax amounts on the extra features or the more expensive plans. If the guy who does the plans sees this maybe he can comment and add that info.
And yes, I did move this post up, since I had to renew the link anyway.