Honestly answer this: If you bought a TV from Dixons for £1500 and 3 days later it was reduced to £750 or your bought an oven for £500 and later that day it was £400 would you feel like you could enquire on this matter politely? This is the same IMO as the value of £50 is dependant on the buyer, my point is not the amount of money I missed out on but where I stand with the shop.
Honestly?
£1500 down to £750 - yes of course.
£500 down to £400 - maybe.
£650 down to £600 - no, not worth it.
Frankly if you are that concerned over £50, perhaps you shouldn't be blowing 13 times that amount on a luxury?