Dear all,
I want to get my hands on complete collection of Upanishads, all 108. Could somebody suggest any publisher preferably in Hindi or Telugu. I checked with Gita Press and checked on its site as well, they don't seem to publish all upanishads together, but they publish them separately.

In Telugu, I have an ebook of all 108 Upanishads translated by Sri Vidya Prakasa Nandagiri Swamy

I'm thinking of placing an order for the Telugu version I mentioned above. Before I do that I would like to take suggestions here if anyone has to offer something better.

Thanks a lot in advance,
realdemigod