How much worth are coupons?

Nothing : /

Nowt.

Serious Sam 2 has been bundled multiple times (and for peanuts) in the past, and there are plenty of threads in these forums alone, offering free coupons.

All you're likely to get for these is other coupons, if that.

Coupons? Most of people are happy when they can get rid of them.

I love to exterminate people that trades coupons

how do u even get coupons

maybe a reclaimed metal.

i would be suprised if u get anything worthy actually (besides other coupons). i gave them away to people from my friendlist.

You can't trade coupons, no-one wants to pay for them :P

$0.00!

The only thing you can get from trying to trade them is negative karma.

the chances to have a trade are almost 0, but you can find(in my case he found me) and make an awesome offer.
I traded a 66% off Awesomenauts coupon for Demigod gift(he offered me this)

They're worthless because everyone has tons of them and doesn't even want them. What you can get for them is laughed at, basically.