Display prices depending on category

-- url of the page with the problem -- : www.yohocards.nl/molen-bestellen/mini-molen-pukart
-- HikaShop version -- : 2.6.0
-- Joomla version -- : 3.3.6
-- PHP version -- : 5.5.23
-- Browser(s) name and version -- : 41.0.2
-- Error-message(debug-mod must be tuned on) -- : No error

I want to display article with prices only in a certain category when the artices are ordered individually.
When I have an offer of a complete display with a number of articles I only want to show the complete price of the display while customers can still select the articles they want. In this case the articles should be shown without the price just as picking list. Can that be done? Now I have created a special category to show the display and the invidual articles on one page but the individual pricing is still visible...

Hello,

Now I have created a special category to show the display and the invidual articles on one page but the individual pricing is still visible...

Thank you, that helped a lot. It too a bit of searching but anyway. Now I want to go one step further: can it be made vissible on a catalogue page how many articles a customer has choosen? (So without having to go to the shopping basket). And the next step: can the number of articles choosen be limited?
Ex: client chooses a display for 12 articles so he should be able to choose 12 articles maximum and when he chooses a display with 24, 36, 48 or 60 the number of maximum articles wil be accordingly. So with every single display choosen the maximum number of articles schould be ajustable for that display.