I am travelling to Budapest from India for a week.
Which SIM card should I get ?
What is the process for getting a sim card for a traveler and where can I find it ?
Prepaid plans are available, and they work as usual - you show up in a store, buy a SIM card (passport was not needed), load some money into it, and choose a plan. There are many providers and many plans, the store will ask you what your usage pattern would be (mostly use Internet? Call India? Receive local calls?) and will suggest a few plans depending on what you need and on what they sell. Expect to spend around $15 at least.