xt commerce - Product-Display on Frontend modification

We are running a german online-shop using 3d-commerce ( a modification of xt-commerce) and selling cigars. We are selling them as single cigars as well as in whole boxes. We want to insert a product only once and then use an attribute and a surcharge to display the different package-sizes (single, box of 10, box of 20 for example). As you should know this is already working by default in xt-commerce. But the way this is displayed for the customer sucks. When using an attribute + surcharge you have a dropdown displayed for the customer where he can chose the package-size and can see the price as surcharge (see attached image). We want to have it that way, that the customer can see the options then in a table/grid-view including the final prices and can then chose which option he wants to buy (see attached image) with one "buy"-button below. Can be either radio-checkbox or text-filed for inserting the amount. I want you to modify the frontend the way that we can have it as described. I don`t want any changes in the core or backend (if possible). I am also looking for someone who is reliable and has good skills with xt-commerce. Long-term businessship appreciated. Bidder from EU are preferred. Also i need an invoice from you when you are done.