Today I was looking to purchase 2 new ultrasonics on the Cookson site.

I saw the model I wanted for 468 each, so decided to purchase, but realised I wasn't logged in. Upon logging in the price then jumped to 500.

I phoned to check this pricing and was told that there is a dual pricing with account customers paying more

Was anyone else aware of this? I wonder how much I have overpaid over the years.