We went to Harbor Freight in St Paul, MN to purchase an air compressor for our son for Christmas. We went there because we had a very limited budget and check out the prices ahead of time at Harbor Freight PLUS we had a 20% Harbor Freight store coupon. We drove 25 miles to this store in St Paul, picked out an air compressor, we up to pay for it, handed the clerk the 20% off coupon, and he said while flipping up a sign at the cash register. "Oh - we don't take the coupons for air compressors". I felt like I was in Pettycoat Junction and we were in Mr. Haney's truck store. I asked to talk to the store manager (Sam) who read the coupon, then looked at the cash register to see if the clerk had the sign displayed that they don't do coupons for air compressors. She said we don't have to honor the coupon because we have a sign saying they will not honor them for air compressors (the only thing in our cart by the way). On the way out of the store, the clerk hands us their flyer with their current coupons. I asked which ones do they not honor - no answer from the clerk.