Advice on What To Buy: Destiny Taken King or a Dualshock Controller

I got $20 in Kohls Cash but am having a hard time deciding on whether to use it to buy Destiny Taken King ps4 for $17.99 or the camo Dualshock 4 with a walmart price match which combined with the kohlscash would end up being $29. Now I know $29 for a controller is a good deal, but I already bought a controller on Black Friday and don't feel the need for another one. I've also never played Destiny and don't know very much about it besides it being made by Bungie. I just need someone to nudge me on way or the other. I also may be able to get my hands on a $20 discount code, but I'm not sure it would stack with the kohlscash.

So it's either:

Get Taken King for free using kohls cash and free shipping since I'll buy it at a kiosk

or, assuming the kohls cash and the discount code stack,

get a dualshock 4 for $9 with free shipping

Thanks

you can never go wrong with more controllers. 

If you're going to buy Destiny 1, it is better to buy the Rise of Iron version. 

Thanks