The conventional agile wisdom* is that a product backlog should be strictly ordered in terms of business value. There are many good reasons for this that are well documented elsewhere and for the overwhelming majority of cases this maxim holds true. It is certainly an ideal that all good Customers and organisations should be striving for.
But it is not the only strategy and in some circumstances there are alternatives that may be more suitable or at the very least worth some examination. I would like to present one such alternative. It may be relevant to you and it is one I have used successfully; you should only consider this to be anecdotal evidence. As usual my thoughts are directed toward larger organisations where greater complexity often demands greater flexibility in approach but this may be helpful to the smaller team also.
The strategy involves not prioritising the most valuable stories first.