Products can have individual shipping amounts which can be set in the shipping meta box of an individual products page.
This functionality works with the flat rate shipping module so not having that module enabled will cause individual shipping to fail.
The flat rate module ( in Settings -> Store -> Shipping) must be set up like this for individual shipping to work. Where are fields have a price of 0.00 with the decimals included
If You wish to have amounts in the Flat rate Shipping module then if The product also has shipped assigned then those two values will be added at the checkout page.