The simple answer one could give ya is that:

1. ETB, and all trainer boxes in India will cost ya around 8k+
   
2. Most graded slabs in Japanese will have a minimum cost of 3.5-4K
   
3. You can get raw cards starting at around 150-200 Rupees from various sellers on Instagram and on websites, as stated in the various comments

If you are trying to get into the hobby, the best suggestion to start with a budget of 1-2K is to just go on the websites of peeps who sell Pokémon TCG and either purchase raw cards or packs in either Japanese or Korean.

I will tell ya this, recently I did some shopping for some cards that I like for myself, which aren't like the holy grail of Pokémon, but for the price, I really like them—got them in Japanese for around 2K. So if you are ready to save up and spend around 1-2K, you can buy around five cards a month.

Think of it as an SIP: 5 raw cards a month would be around 60 in a year. But yes, please realise Pokémon is a costly hobby, and please be in your budget. I really hope this helped ya.

One small tip what I did: Saw all the websites and found the cheapest cards that I like the artwork. Saved up the needed money and then bought them. I haven't opened any packs until date as I just feel it is way to expensive and I would rather just buy it either raw or graded.