In Europe discounts are much lower, and prices are a lot more set in stone.
However, the key caveat here is that most people don't know what they're doing.
So in the US 80% of the population is robbed so that the 20% can take advantage.
In Europe everyone gets a worse deal, but it's never going to be super bad.
Pick your poison :-)
"What's the best price you can give me?"
"Sir, we advertise our lowest prices up front so you don't have any pressure to haggle."
"You can do better than that price."
"... Let me see what I can do."
I believe he got a grand knocked off when it was all said and done.
The other dealers focus a little more on the experience and will haggle a bit with you. They usually don’t use high pressure tactics but won’t give you the lowest price.
I also find the personalities of used car salesmen to be so grating that I'd rather do it all over email.