In determining the value with regards to the sales from one to another of affiliated persons, or under other circumstances where the relation between the buyer and the seller is such that the gross proceeds from the sale are not indicative of the true value of the subject matter of the sale, the Director of Finance shall prescribe uniform and equitable rules for determining the value upon which such privilege tax shall be levied, corresponding as nearly as possible to the gross proceeds from the sale of similar products of like quality or character where no common interest exists between the buyer and seller but the circumstances and conditions are otherwise similar. (Ord. 95- 17. Passed 6-15-95.)