This fantastic two-day sale follows Sprint's previous $50 HTC EVO 3D promotion. Other phones that are free today and tomorrow include the EVO Shift 4G (barf) and the Samsung Conquer 4G (gag), but who cares about them when you can get some OG EVO goodness for nothing – other than the cost of a two-year contract?
A quick check of Amazon, Wirefly, and Radio Shack shows that the EVO 4G is no longer available from any of those sites; this makes sense, since it was EOL-ed months ago. However, it's still $99.99 at Best Buy, so if you want this relic of a phone, Sprint's your best bet.
I don't know about you, but I could get used to weekly sales like this from Sprint very quickly![Sprint]