Yes, it can extend your membership but the 750 cashback will be applicable only if you qualify for the youth offer. It's a good deal at Rs 1000 if you are not youth. If you are youth, it's just amazing deal. A full fledged Prime Membership for a Year only at Rs 250 effectively.
After you purchase the subscription it will show a banner to activate the youth offer in which you will either have to verify documents via digilocker or upload it manually.
If you need any help in activating the offer, I will guide you the complete process step by step.
Again you are in your own World of Assumptions that I am getting it at Rs.250,
not everyone on this forum is in age group of 18-24 for whom this Youth offer is valid.
I would have purchased it as a buyer. if it didn't come with the condition of buyer activating it via Amazon Youth offer and then getting 750 CB.
Anyhow.. It's your voucher you can sell at any price that suits you...
Instead of explaining these details you could have simply mentioned "I am selling amazon prime voucher of 1499 @ 1000"
and then could have explained the additional benefit of Amazon Youth offer that "you will get it for 250 by doing this that jugglery etc."
Instead you made your post confusing like a new overwhelmed salesperson who goes on to explain things to customer without understanding the customer requirements.
@beast_boy My target customers were young users only that's why I mentioned it at the beginning itself. The offer might not be appealing for everyone, that's why I specifically mentioned everything.
Also you asked whether I would activate youth offer in the account, this led me to assume that you were youth.
PS: The voucher is sold out to the target customer.