can't speak on the Prior cancellation of a demo day, but it sounds like they live by the "Ain't no friends on a powder day" motto. probably not the best motto if you want to sell skis, though.
my only interaction with Prior has been via email and they have always been quick and attentive to my queries, so until they blow me off in person, they're good in my book.
i know over on TGR there's a legion of fans of the PMGear Bro, but there's also a few folks who hate it and the company's customer service. The bottomline is that you can't please 100% of your consumer base all of the time. i would hedge a bet that if you're pleasing 75% then you're doing pretty well.
i just know from experience that companies like Armada, Prior, Scottybob, AK, Lib Tech, and Blizzard were great to deal with via email, asking questions about mounting points, demo days, and whatnot. AK set me up with free demos (they only have them at a shop in Kirkwood for $40 a day demo fee, AK's US rep waved the fee, which I thought was cool of them). Both Prior and Scottybob have told me to look them up whenever in their area and they'd set me up. Armada was great about giving me pointers on mounting points, even though I eventually didn't like their skis, they had great customer service. The Blizzard rep I dealt with went out of his way to track down season old skis for me at a great price).
Conversely, I sent innumerable emails to Line skis. Never once heard back from them. Ditto on Volkl and Rossi. I'm only human, so if I send out a letter to 5 companies and only 2 get back to me, then I'm going to deal with the two who recognized me.