The LG5 is advertised as $0, with a $301 tab to be put on your account. The retail price on the Koodoo website is $596. I have $108 in credit on my tab. When I go to check out, it increases the base price to over $700 - the amount of credit on my tab, so that I would still owe the same amount in 'tab' as someone without any credit. WHY?