How heavily was it used? - Not too much. A friend of mine and I got some and we didn't play very often. Mostly shot at pop cans and stuff. Never through the mud, and never left in a garage or anything.
Where are you located? - Columbus, Ohio.
Are you looking for any trades? - Not really. I am trying to pay for trip to Europe, but if you have an offer, the worst I can say is "No thanks" :-)
Do you take Paypal? - Yes, that is fine. However I am not familiar with accepting payments via PayPal, so if there is an additional charge, I would include that in the price. Cash or cashiers check would be preferred.
Is shipping included? If not what additional cost do you estimate? - I'm not sure, honestly. If you give me a zip code, I can get back to you with an estimate.