Let's charge you more for the colour

I bought my little one flippers yesterday they were to small. I went in today and got the bigger size and got to the till EXACTLY the same flippers, just green not blue. And had to pay in. I queried this as it was the same flippers and they told me its cause of the colour.

Wow Mr Price!!!! Just wow. You price on the colour of items. Then the guy says oh the blue were marked down. So why were they with all the others? Maybe have a section for marked down (old stock) cause I took the ones today off the exact same shelf.

Oh and maybe teach the staff to be helpful cause they are so miserable maybe they should be grateful they have jobs during these times.