I would have the
product object initialize three member vars when it is constructed:
$sale_price,
$list_price, and
$cost_price. Each having the obvious accessors
get_sale_price(),
get_list_price(), and
get_cost_price(). And, I would leave it up to whatever is using the
product object to choose which price is appropriate to it's needs.
Is there a specific reason you cannot do it that way? Are applications alrady using the get_price() call and expecting the product object to return the appropriate price?
enoch
