Contract Sim card for sale ?

Hello, I have a spare sim card which I am not using and would like to sell this to someone who can make use of this. i have additional contact sim card (Tmobile) which comes with 50min per month with unlimited internet and unlimited text messages. I pay about 20 per month and its on 18mts contract. I can sell this to someone at reasonable price who can make use of this sim. Get in touch with me at 07909837656 or email me, Many thanks, Jay