What a joke...I'm guessing it's possibly poor website coding which has caused it to rise due to other factors perhaps. But still, it's out of order if the prices are supposed to be fixed for a week.
(Awaits someone to come along with fine print saying it's okay for them to be adjusted before the week is up)
(Awaits someone to come along with fine print saying it's okay for them to be adjusted before the week is up)