Customizable Option not changing price

Hi,

I’ve got a strange problem.

I have configurable items that also have customizable options to choose from.
Currently I’ve added these to few of my products. However I noticed a problem.

With product A both configurations and options work as intended.
With product B everything does change the price on the product page but when product is added to cart price excludes customizable options.

I added everything the same way. Configurable products where all imported via importer using csv files, so there is no way some products have different settings.

Any idea what is wrong? I tried reindexing, clearing cache and so on but those didn’t have any effect.