At some point GameBillet look to have made a whoopsie and listed the game at £4.20, before correcting it. They probably got the decimal wrong.
Either way, this means historical low pricing is never triggered on this item due to this error, and there doesn't appear to be any way to ignore a store which makes such an error for a single game. Given this, I'm raising an issue in the hopes that you can fix the listing.
At some point GameBillet look to have made a whoopsie and listed the game at £4.20, before correcting it. They probably got the decimal wrong.
Either way, this means historical low pricing is never triggered on this item due to this error, and there doesn't appear to be any way to ignore a store which makes such an error for a single game. Given this, I'm raising an issue in the hopes that you can fix the listing.