You only need a plug shape adaptor to use in India. They use 220v 50hz, UK items will work without issue. The advise above is incorrect.
I purchased one for £79 on black Friday from Amazon. I also tried the Pressure King Pro and there are lots of cheaper ones. However the IP is really well made, specifically the inner stainless steel pot which can be put on a hotplate with the lid on. I have a second inner pot so I can then cook more things for the same meal and of course you can get inner stackable pans as another accessory to cook multiple things at the same time. I haven't stopped using it every day since then and my wife loves that I now do most of the cooking :)
May be you are right and I dnt want to sound like an advocate for IP but I have boiled 6 eggs today in IP in 5-7mins and have made porridge in the past (with no stirring or baby sitting) in 10mins.
Also I got all my accessories online either from amazon or ebay but some here and some in USA.
The price isn't too bad if I'm honest.. And about cooking foods that need same cooking times.. You will get more confident as you use it more and understand how to find a happy medium. For example if I cook dal in one box rice in other and dry veg curry in third, I know dal needs more time so I will either soak it for few mins bef cooking or use hot water from kettle to make the cooking faster. All three things cook in 15 mins and no clean up at all other than the 3 boxes. Happy days!