Are those the el cheapo ones with a rubber tip? Not worth it even at that price. The rubber doesn't glide on the surface the way the good ones do. I have a rubber tipped one, I'd give it away if anyone wanted it. It's useless.
If you're going to get a stylus I recommend getting one with a microfiber tip. Glides on the surface with ease.
I'm a poker not a slider so the rubber tipped ones work fine for me.