https://m.gsmarena.com/results.php3?mode=tablet... I had to set the year of launch all the way back to 2018 in order to accomodates used tablets.
There are no good tablets in the 10k range AFAICT. Not even semi-decent other than say 5th/6th gen. iPads. Hopefully a battery replacement won't be necessary as it costs around Rs 20k in general. Rs 10-11k if Apple determines that battery health has fallen under 80% and the customer is not at fault.