Something appears to have changed at Wickes WRT their price promise.
Last time I tried to use it they wriggled like f*ck. It was a shaver socket at about £22 that TLC sell for around £8 IIRC.
They wanted to know if it was the same make, did it comply to the same BS, did TLC have it in stock, - and they phoned TLC to check. Eventually they gave in & matched the price.
I tried this price promise thing a while ago in B&Q. I needed a fair amount of white spirit & Wilkinsons were cheaper. They wriggled like f*ck & claimed that Wilkinsons white spirit wasn't the same as B&Q white spirit.
Today however I was in Wickes & had to buy 4 cartridges of grab adhesive. Wickes own brand @ £3.59 each. I usually buy Gripfill from TLC @ £2.15 inc VAT.
Mentioned this at the till & they immediately reduced the price of their own label stuff to £2.15. No questions, no need to produce a TLC invoice or catalouge, just took my word for it.
Retailers usually use the 'own brand' label to avoid honoring the 'price promise' offer.
Worth a try next time you are in Wickes chaps.