Lowe's is having a sale on their Troy Bilt 3000 PSI for $300. $100 off from the normal price of $400.
Stack it with a $50 off $250 coupon: 4700RRRRR84680R (obviously replace R's with random numbers)
Item #: 623644
Link
The 'product overview' says they are. I already had a hole saw set, so I bought them for a friend, but didn't check to see if they were in fact USA made before.
I've seen a few Home Depots around me have the Klein hole saw set on clearance for $23. It's on the website for $40. Down from $80+
http://www.homedepot.com/p/Klein-Tools-8-Piece-Electrician-s-Hole-Saw-Kit-31630/203499080#.UpT1kmQ9xDE
I have that same impact and it works great. Took off a couple crank pulley bolts off with it, so it's definitely got power.
Amazon sells it for $129, and they are having a $25 off $100 sale right now. You could probably pick up a battery and charger for pretty cheap off ebay or something...