Quickcilver seems to have recognised that there is a thriving trading market for its gift vouchers.
In the latest update, woohoo app has added a trading platform. One can buy or sell existing quickcilver cards at a discount via the app.
As the trading is regulated by Woohoo, the level of security is much higher.
All app payment options including citrus, payumoney, payback points and bank debit card points are available for payment. Purchased GV gets added to app immediately.