3 items:
1) Any purchase from Grainger, MSC or J&L ask for a discount they will automatically go 10% at least off book prices, I got 30 off on 5 bench grinder wheels for 5 of us.
2) SnapOn has repo specials talk to your local dealers 40-60 off list prices
and lots of stuff available for zero down zero interest.
3) ANY internet provider, ISP, no matter how long you have been with them call and tell them you are either going to QUIT or move to a new company, they will either give you (Verizon gave me 30 off per month for 2 years) set discount or a cash off bonus of 100-200 bucks.