Actually, I had the reverse problem when I was selling a gun on gunbroker (but i never told the guy to s---w himself). I had the specifics of the sale in the ad, but the old guy didn't follow any of them (no PO Box, Postal MO only, etc.). He sent me a PO box address, and a bank money order. I worked with him and we got the deal settled, but it was frustrating. He said I was the most fussy seller he ever dealt with (at least I'm not a jerk though). I came very close to the s---w yourself answer but I contained myself. He didn't leave feedback, so I didn't have to contact gunbroker.
Liberty and freedom often offends those who understand neither.