members with no feedback?

If you are the seller there is very little to be concerned about. If you are the buyer you can ask the seller if they have feedback elsewhere (like Ebay). I've bought from individuals that had substantial good feedback on Ebay, but little or no feedback here. I've also heard of COD (cash on delivery) payment. and using escrow, but have no experience with either. Short of this, I'd move on.

I usually wait to see if a member with good feedback makes an offer. I am more likely to take an offer, even if a little lower, from someone with good feedback. Not a guarantee, but a little more reassurance. Also, I wait a day or two after receiving the money in Paypal to make sure the account is still good.

For member (seller) without any feedback, I would deal with them if only the transaction involves smaller dollar amount to minimize risk.

some type of escrow transaction is the only way I would do it

The last time I had a potential Buyer with no A'gon feedback, he was local, & called me. I was selling a mint condition one mo. old TT. It was a weird conversation where he was asking some very odd questions, like, "what did I do for a living", he seemed very suspicious, like he thought even A'gon members with great feedback were selling fake items or something. Oh, & he also insisted that I deliver, & set up, the TT for him.

After about 10 minutes of this, I finally told him, he should go to a dealer, & buy a brand new one, if he wasn't comfortable buying used. Then he said, "oh, well maybe that means you're actually legitimate" (!!?).

Next day, I sold it to an A'gon member with good FB, happy transaction for both of us, no BS.