Remove a price info in basket checkout page

Hi all,

I’m using Woocommerce + the Woocommerce Gravity forms add-on on my website.
My issue is that when a customer fills out the product form (on the product page), and then gets to his basket to proceed to the checkout, there is a price info that shows on both pages that I don’t want there.

To be more precise : the website sells packaged trips. For one trip, you have to choose from different options including the type of hotel (hostel/2*/3*/4*). The price of the package is XX corresponding at the cheapest option (hostel). Then if the customer chooses 2* hotel for example, the price of the package goes up 100€. But I don’t want the 100€ to show on the basket / checkout page. I only want is choice (2*) to show so that I know what he chose.

here is a picture showing what I mean :
[IMG]https://i63.tinypic.com/2v3llxx.png[/IMG] or https://tinypic.com/r/2v3llxx/9

and here is a link to one of my product pages (but you’ll obviously have to fake a purchase if you want to access the basket/checkout pages):
https://tinyurl.com/pzum42k

Any help would be great !!

Thanks in advance
G