TheMarket does not manage retailers' pricing which can change from time to time, as such TheMarket does not have a price match, or price promise policy and cannot issue refunds when a price drops.
If your order has not shipped, you can request to cancel it. Please note a cancellation request does not guarantee the order will be cancelled and is subject to being accepted. The steps are outlined here.
If you no longer want the product you have purchased, and your purchase is eligible, you are welcome to lodge a return request via the process outlined here.