Old Man's War series
 

I just finished the free, Tor copy of "Old Man's War" and liked it very much. I am now trying to find the other four in the series. I have found three of them in Mobipocket format with DRM. Not only do I not want to support DRM-infested ebooks, but the price for the Mobi versions is twice what the paperback costs. Further searching turned up "The Ghost Brigade" at Pan-MacMillan in epub, but not the other books. From what I have read here, these epubs are DRM-free?

Does anyone know where I can get all four of the remaining series, preferably DRM-free? If I have to go Mobi or Lit and strip the DRM, I can do that, but I don't want to pay double what the paperback costs.

A friend of mine has the entire series in paperback and will lend them to me, but I actually would rather buy the ebooks.

This doesn't answer your non-DRM request, but the series is available from Amazon in Kindle editions.

Still doesn't help as The Ghost Brigades is in Topaz format. Doesn't even help Kindle owners.

Yes, "The Ghost Brigade" is DRM-free.

The others seem to only be available as Secure MOBI ebooks. FictionWise currently has a 30% micropay rebate on science fiction.