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Is there a good trick to the following:

you have 4 options that are picked by a radio button. At the end of each you have the value add price. If the user picks a higher price option, how would you have the other prices change in “add” or “subtract”?

example is:


  1. 0
  2. +2
  3. +3
  4. +4

User selects option #3 and I want the math to change to:

  1. -3
  2. -1
  3. 0
  4. +1

any ideas?

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