At one point during my profession I worked/did undercover drug buys. I have negotiated while looking at a gun and still got a bargain
Not much creeps me out about a CL deal. If someone wants to take the money I'm bringing to buy or the thing I'm selling without paying, they better have some experience at it. I have, on only few occasions, sold at my house because the item was difficult to move and couldn't be transported easily to a common location.
All that said, CL has been very good to me.