I have a coupon for one "Elite Lifetime" plan at http://www.netguard.re that I am willing to sell for $40 USD. This is $10 USD off the normal price. I would consider trading for skins as well, but the skin value would have to be around $55. Netguard has been my favorite stresser so far, the UI is really clean and it hits harder than any other stresser I tested (I've tested quite a few). The stresser features a stop button, a renew button, an IP logger, and a friends/enemies list. The sales thread for this stresser claims to be on a 50Gbps+ network. There are two attack types, UDP and CHARGEN. You also get unlimited attacks.
Here is a dstat that the owner has made from 1 thread off of 1 server:
http://i2.minus.com/ipTLp8UTbLcV8.png
If you want I can show you how to grab IP addresses via steam as well.