I know the $75 off $300 has been posted, but when looking at Bosch miter saws last night, I saw some other offers as well. There is one for a free Hitachi blade with purchase, and it appears as if with some saw, you get a mail in offer for a free Bosch jig saw as well. Odds are there will be restrictions on which promo codes you can combine.
Now I just have to pick a saw...