I can keep mine going for 5USD a month. Anyone can actually do it. I still own chainexplorer.info but am not using it so I can donate that as well.
If someone steps up here's what they need:
- A 5USD vps from Ramnode, DigitalOcean, etc
- 10 minutes of instructions from me
Considering I'm in the middle of a Fedoracoin project that links off to a blockchain explorer for optional verification, I'd be very interested in getting and keeping this running, since relying on 3rd parties for it seems to have been slightly disastrous at this point. We'll be in touch in the next couple of days.