Quoted from pinballwny:
How is the tax determined on a private sale? Do they assess value or do you provide a "receipt". I can make a receipt for just about any number. My printer doesn't care. So if you show up with a receipt for $3000, do they dispute your purchase price?
It's been years since I took a pin into Canada, but I just made up a price ($400 for a Judge Dredd) and no one questioned it. Don't know if it's changed over the years, though.
Sure, you can get a fake receipt. However, I've brought a number over, and the best advice I can give, is be honest. It's not that difficult to find out what the approximate value of a pin is. Indeed, the only time I've ever had a problem is when I got a great deal on a bit of a beater. It wasn't believed, because there was another one on ebay for more than double the price I got. I got pulled over, my family pulled out of the car, and the pin inspected carefully. Once my condition issues were verified, and I paid the taxes, I was free to go, but it was still a stressful experience, and one my wife was less than thrilled with. Every other time has gone smoothly, because I don't screw around at the border. Say they shave a few hundred off the price - you've saved $26 - big woop. Now, a few thousand is a different matter in savings, but the odds of it being believable are slim.
I just about died when I brought my Grand Lizard over recently, and 3 days before someone listed one on ebay for $5495.