Harry Potter and the Order of the Phoenix's different DVD versions and HD-DVD/Bluray versions will be going to released on December 11th (long way) in US. It is unclear when these home videos will be going to released in India or even HDDVD/Bluray will be going to released in India or not.
Prices for HDDVD and Bluray are pretty high though, reaching $34 to $40 (INR Rs. 1380 to Rs. 1630, if they release in India).
Price for Two Disc Special Edition (pretty sure) will be around Rs. 699
There will be special features in Two Disc Editon as well as Bluray and HDDVD. Two Disc Editon features are:
10 minutes of never before seen footage."Trailing Tonks" featurette - Spend a day with Actress Nat Tena and receive a very personal and often wacky tour of the Harry Potter and The Order of the Phoenix stages.
"Harry Potter: The Magic of Editing" featurette - Director David Yates and Editor Mark Day show us what a difference a good edit makes and then allow you to edit a scene.
"The Hidden Secrets of Harry Potter" featurette - We look for clues in the past Harry Potter films for what the future films may hold.
Plus 10 minutes of addition footage and making clips.