In our website centreline.co.nz we sell among other products lots of different types of sandpaper.
Most of these sandpapers are available in several different grades, sometime 10 or more. They are otherwise the same. At the moment the customer can lose the overview with so many similar items.
It would be nice to present the customer with just one product for all different grades.
Perhaps the customer could select the required grade from a drop down menu. However not all grades are the same price, nor are they sold at the same box quantity. For stock control reasons they also need to be handled as a separate products, each grade with their own product code.
Since all all products are already in our database, I don't want to mess with them but just display them in more compact way.
I am more like a novice and hope for an easy solution, but if customization is required I may need to use the help of a professional web designer.
If the price modifiers are the same for the options for all products you can just make it a global option and then "link" (cs-cart term for "reference") it.
You could do an export of your products just selecting the needed fields and then add the options into the CSV and then import them.