Variation #1 = small box of 100 for $150
Variation #2 = medium box of 250 for $275
Variation #3 = large box of 500 for $450
Variation #4 = extra large box of 1000 for $850
To offer different headlines and texts, well it depends how many of those there are. If there are say 2 of each, you will have 3 sets of attributes and 2 x 2 x 4 = 16 variations which is manageable. If there are lots more variants of headlines and texts, then the number of variations could become unmanageable. If this is the case, have a look at “add-ons” plugins:
https://codecanyon.net/item/woocommerce-extra-product-options/7908619
https://codecanyon.net/item/product-options-for-woocommerce-wp-plugin/7973927
https://www.woothemes.com/products/product-add-ons/
maybe others.
The variations would be as above and the add-ons would be the headlines and texts. These can be specified by you and offered in the form of a list of radio buttons, or you can provide text areas to allow the customer to specify the texts if you are offering a custom service. These “add-ons” can be priced or not.