My personal experience has been mixed. I bought lots of parts for my convertible at one time, and had no problems with service or quality. Another time I ordered one part, and when they couldn't fill the order, I had to wait almost a year for a refund.
Yet another time, I tried to order from Rick, and despite leaving several voice mails, and finally asking someone who answered a different phone, to please pass on a message, I never received a call back.
Because they are a one-stop supplier, I would probably order from them again, but I would verify the part is in stock before sending money. In the meantime, I've found other less expensive suppliers for many of the same parts offered by Laysons.
FWIW, I will give Dave credit for creating many of the aftermarket A-body parts that wouldn't be available today if he hadn't started the ball rolling. If he ever learns a little humility and gets his act totally together, his company will boom with business.