Each font development takes three to four months of work which is nearly 600 to 800 working hours. A designer has to draw all characters (for Telugu number of characters are higher than any other Indian Language). Then a coder or font designer has to convert them into font.
I'm currently planning to develop 20 more fonts. Requesting all the Telugu people to donate funds to complete this dream. All the fonts will be released under OFL license, so that anyone can use them free.
You can visit www.opentypefoundry.com to access already released fonts to download and use. My fonts also available at https://fonts.google.com/?subset=telugu&sort=alpha