I do a ratio type thing
base card 2.50
# d to 100-- 25.00
#d to 50---- 50.00
#D TO 25-- 75.00
#D TO 10--- 100.00
#TO 5---- 125
# TO 1--- 150
even though they are not allways this easy I take the value and find the difference and keep adding the difference until I hit the 1/1 or the NA card I have
base card 2.50
# d to 100-- 25.00
#d to 50---- 50.00
#D TO 25-- 75.00
#D TO 10--- 100.00
#TO 5---- 125
# TO 1--- 150
even though they are not allways this easy I take the value and find the difference and keep adding the difference until I hit the 1/1 or the NA card I have