Lizard1977:
I had an experience a few years ago which is similar (but not identical) to the OP situation. I bought two appliances from HN on finance, and the day before they were due to deliver they had a sale and the price of one of the appliances dropped by $150. Under the Credit Contracts Act (or whatever its called), it sounds like you can cancel the contract if the goods have not yet been delivered. I went in to speak to the salesperson armed with this knowledge, and asked if they would apply the newly discounted price. I figured if they said no, then I could ask to cancel the contract, and then purchase at the new price. As it turns out, I didn't have to do this, as the salesperson agreed. Maybe they were aware of this or maybe they just saw the opportunity to build rapport with a customer, but either way it was a good outcome. And that same salesperson has benefited to the tune of several thousand dollars worth of subsequent sales - I now seek out that particular salesperson for future purchases - all because they could see the benefit of long term over short term gains.
The situations aren't the same, but the principle is. If there's a real possibility for future business then they should weigh up what the true cost of that discount really is. Unfortunately, I think too many businesses can't think beyond the short term...
I had this same experience 5 years ago with Noel Leemings, when we bought our house it was new TV time.. we bought a couple of TV's from Noels, took them home, set them up and started watching TV.
Two days later while watching I see them advertising a 20% off sale which would have made our TV's $500 (each) cheaper than what we paid..
Thought id have to march in there and speak to their manager but no, the sales guy I dealt with was fantastic saw where I was coming from, refunding the original sale and put it through again at the new discounted price.. for such a large refund he needed the store manager to come in and input his password to approve the refund, the store manager was even apologetic saying they don't know about the sales until the night before!
Has been my go to appliance store for the past 5 years now...