He showed us the 'list' price, added a 'standard' 10% discount, then mentioned that all of their newspaper ads offered "Buy 2 get 1 free" and added an additional 33% discount (for a total of 43%), then offered to show us his 'best price' by adding an additional 8% (total 51%) showing us where his spreadsheet said 'Price Below Cost' (another gimmick, but easy enough to see through) and then backing the discount back to 50%. All of this was done in the span of about 2 minutes with no response from us.
This brought our total price for the job to $7620 ($544 per window).
Isn't that silly. He could have figured all that on his calculator keeping his mouth shut the whole time, and then just given you the price of $7620. He could have looked professional and saved himself the embarrassment of looking like a schmuck.