I was relatively late to the game compared to some on here. Mine was the Passport from back about 1987-1988. It was delivered Fedex Overnight to my office at work and a coworker and I marveled at the small, sleek looking unit. All metal, it was heavy for it's size, and you could tell it was high quality just looking at it. I think the original Passport is still the coolest detector ever in terms of size, performance and looks (ok, the Valentine 1 is pretty cool too).
I bought a new Passport in the mid to late 90s, what a piece of junk. A clunky piece of black plastic that hardly seemed to pick up radar at all.
I believe the price was $195 back then, although I may be wrong on that. According to an inflation calculator I found, that works out to about $350 in today's money.