Spoke with Craig and he said it is most likely that your basket contains sale items or some Soft99 products to which the discount does not apply as the manufacturer doesn't allow it.
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Perl is great, but it is a water based product, so durability isn't great. If you are looking for a more permanent solution for the bumpers, then try DLUX. A great product that will restore and protect for around 12-18 months.
Just a note, dressings on floor mats isn't a very good idea, this can transfer to the pedal and cause safety issues.