It isn't really easily available or they are not really interested in selling in bulk as of now, if you just want to go for the brand name and buy overpriced all in one devices, sure.
Their
GPON basic
ONT seems priced alright although around 1k would have been more ideal --
Amazon.in: Buy TP-Link 1-Port Gigabit GPON Terminal TX-6610 Online at Low Prices in India | TP-Link Reviews & Ratings but it is GPON only, so do check if you are on GPON or
EPON. Most chinese ONTs support dual mode.
Anyway I'd still recommend getting a basic ONT (say
Huawei or
Netlink or whatever) and then get a decent wireless
router separately.