if we creating separate service plans that will be displaying into the storefront, in this case we can use the single/same resources into the resorce rates tab and we can give inc value and max
value.
if we are displaying serviceplan as incremental button in the store front then we can follow the same method-means this case also single resource unit as enough.
in the case of incremental button display unit prize must be stable. otherwise it is not usefull.