not at all - if you use a custom style you need to adapt all settings, which you want to be different from its parent style (and e.g style
Good has no decimal digits →
Sold has no decimal digits). Hence, if you have a
Sold style, you need to have additional derived styles (derived from
Sold style) for:
SoldDate for your Dates
SoldDecimalD0 for your decimal numbers requiring
SoldDecimalD1 for your decimal numbers requiring
SoldText1 for special text formats
Note Of course the naming of the styles is up to your preferences.
(The cost for design is complexity in styles).