2 PIECE OFFER WITH A FIXED END PRICE..? Looking for an app

Hi - I really hope there is a smart person, who have figured this issue out and can help me - as it has been annoying me for some time now!

Lets say I want to run an offer on our vintage sweatshirts (+1000 styles to choose from)..
and I wanted to announce; “PICK ANY 2 SWEATSHIRTS - FOR THE PRICE OF XXX”

WHAT I NEED:

  • to be able to control the end price (fixed amount) - meaning no % rate

  • need the 2 lines to be deducted individually (divided equally BUT according to original price, if prices vary a lot) - so if they return styles - they will only get the actual paid amount back

  • if a 3 style is added to cart - this will also include in offer, and 4, 5, 6 and etc

WHAT I DON’T NEED

  • a bundle app where individual lines are not affected - if the customer want to return 1 out of 2 styles

  • a % discount as I will not get the desired end-price as announcing..

I really hope there is an app that will work - I can’t find it myself for sure

Best Louise

Can I know why BYOB is not suitable for you? I’ve seen that you’ve published a bundle but you deleted the linked product in your Shopify product admin.