Amazon India — Seller's trick to cheat customer

Address:	Bangalore, Karnataka, 560066
Website:	BookreadersIndia - Amazon Marketplace

I have ordered book from amazon, Order#:[protected]
Item: Body by Science: A Research Based Program to Get the Results You Want in 12 Minutes a Week.

Price was Rs.940.

after few days Seller sends me mail giving story and directing me to cancel the order, message attached.
[protected] Begin message[protected]
Dear Customer,

Greetings from Seller..!

This is in context to your order placed through Seller.

I would like to update you that the Consignment from USA has lost in transit & your ordered book was a part of that lost consignment. We are continuously in touch with the airline but till now they have failed to trace the consignment.

We request you to kindly send one cancellation mail to us.
1. In the Manage Orders tool, locate the order you want to cancel
2. Click Cancel Order in the Action column
3. On the Cancel Order page, select a Reason for Cancellation. You may also enter any information you want to keep track of in the Seller memo field.

Regards,
Seller
[protected] End message[protected]

I did raise the complaint with Amazon, than Seller send another email telling me to re-order but by now seller has increase the price by 21.66%
Message attached.
[protected] Begin message[protected]
please re-order
[protected] End message[protected]

Now why should I pay more for the same book, is this a trick to get customer and increase the price later. If I have to re-order why should re-order on amazon with such experience.