I don't know much about RPI alternatives, but those seem to either cost a lot more (BeaglePlay) or they seem to be much larger and with worse power consumption (used Xeon workstation)?
Then you're stuck. If you want to wait for the cheap subsidized part then it might be a while. Maybe forever in the case of the original Broadcom SoC. Beaglebone Black is ~$50 if price is really the problem. What's your objective here?