I dont know where I got these shits, but they seem like a good start for negative keywords for your PPC campaigns.
EXCLUDE BARGAIN HUNTERS
-affordable
-auction
-auction
-auctions
-bankruptcy
-bargain
-bargain-basement
-bargain-counter
-bargains
-cheap
-cheapskate
-classified ad
-classified ads
-coupon
-cut-rate
-deal
-direct sale
-dirt cheap
-discount
-discounter
-ebay
-economical
-factory outlet
-factory sale
-gently used
-good buy
-hand-me-down
-inexpensive
-low-cost
-lowered
-low-priced
-low-quality
-previously owned
-reasonable
-reduced
-reduced in price
-sale
-sample
-samples
-save
-second-hand
-skimp
-special item
-stingy
-tightwad
-trial
-trials
-uncostly
-used
-voucher
-vouchers
-wholesale
-worn
EXCLUDE BARGAIN HUNTERS
-affordable
-auction
-auction
-auctions
-bankruptcy
-bargain
-bargain-basement
-bargain-counter
-bargains
-cheap
-cheapskate
-classified ad
-classified ads
-coupon
-cut-rate
-deal
-direct sale
-dirt cheap
-discount
-discounter
-ebay
-economical
-factory outlet
-factory sale
-gently used
-good buy
-hand-me-down
-inexpensive
-low-cost
-lowered
-low-priced
-low-quality
-previously owned
-reasonable
-reduced
-reduced in price
-sale
-sample
-samples
-save
-second-hand
-skimp
-special item
-stingy
-tightwad
-trial
-trials
-uncostly
-used
-voucher
-vouchers
-wholesale
-worn