Price List

I've attached an excel spreadsheet that would like to have but different costings. I need the drop PG tab and I would need to lock the page but i can only change it. I like the layout to be the same, maybe a few different costings and headings. I would like to give it to my sales team (locked that they cant change it) but i would like to change it if costing change If you have any questions please let me know