The free version of grammarly is more than enough

check out #100dayswritingtip on this group for free writing course

Buy Limguix Appsumo deal if u wanna good alternative of Grammarly. Lifetime deal
is near about 10 to 12 dollars if we go for 15 licenses. I am purchasing in bulk
quantity

If you're writing in English, then yes. I would suggest you get it.

Whether it is good or not, depends on your usecase.

It will cost you 70$ with an offer which is 5K in INR.

If you are a professional blogger who can recover the cost in 12 months, go
ahead and buy.

If you can afford and want to write error-free blog posts, go ahead and buy.

If not, don't.

Any alternative other thn grammerly

For you own website only?

A big no

if you are a professional content writer then yes