I got a #42030 Volvo L350F last week in Smyths in St Helens, UK. The price on the box was £139.99, so I asked an assistant if the price was correct, as it seemed quite low (I had already had a quick check online while in the store, and seen that it was £169.99 on the Smyths web site). He told me it would have been priced correctly, and so I took it to the till, where it rang up the full £169.99. I pointed out that the sticker on the box gave a lower price, so he spoke to someone senior on the shop floor, who then went off for 5 minutes to talk to the manager, then came back and gave it to me at the lower price. There were mutters in the background about a mispriced item...
I'm afraid it's back to full price in that shop :-(