I've bought from duck several times (1B-15B) and every transaction always goes very smoothly. He always provides a top notch service unlike no other and tends to have bils in stock ready to sell.
Would highly recommend doing business with duck if you're looking for someone friendly/respectful...
Bought 3B with him. One of the fastest transactions yet bought off him many times and trades always go fast and smooth whilst also offering top rates. Would highly recommend buying and selling here.