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I forgot to mention that drop down menus is not an option in my case, because it always shows the price different, unless you can tell me how to hide that price different.
drop down menu: $123...

Didn't work, maybe I did wrong, would you please explain more detail. Thanks

When the option type is RADIO and the value 0 is selected, the price doesn't change back to previous amount.

i.e:

Price: $100
option 1: +0
option 2: +100


option 1 selected -> price $100