Before:

Nolim¦
     ¦      
     ¦--Product --->   path           rate
     ¦ 
     ¦                 paper            0
     ¦                 pen              0
     ¦                 pencil           0
     ¦                 eraser           0
     ¦                 tape             0
     ¦ 
     ¦
     ¦--Income ---->   line           quote

                       carton           15
                       pen              25
                       tape             60
                       sharper           5
                       pencil          100 


After:

Nolim¦
     ¦ 
     ¦--Product --->   path           rate
     ¦
     ¦                 paper            0
     ¦                 pen             25
     ¦                 pencil         100
     ¦                 eraser           0
     ¦                 tape            60
     ¦ 
     ¦
     ¦--Income ---->   line           quote

                       carton           15
                       pen              25
                       tape             60
                       sharper           5
                       pencil          100