Originally Posted by
thinktubes
This.
If you pay for the bike, the seller has to complete the transaction, including proof of delivery.
Agree about walking away, but if you pay, you'll be able to shift the blame to the seller (rightfully) and be able to leave neg feedback. Either you'll get the bike for the agreed price or you'll get your money back.
I think it is time to pay for the bike and shipping. I would not be surprised if the bike suddenly is no longer available shortly thereafter though, lost, stolen, disappeared, I have experienced that.