Tell you what, if investment in the game is the model paradox wants to push, those who want to pay 1-200 dollars can do so, and those who can only afford 10 dollars can do so, and in the end they will all even out. Call it what they call it at church and firehouse fundraiser dinners here in the US... a "free will offering"
I hope everyone gets my humor here, but my point is that yes to some it may be worth more for their entertainment, but personal worth for some does not mean we all can afford to shell out that much money for a veiled beta testing. Some of us have families, full time jobs, people who we need to support, and just want a little hour or two entertainment here and there straight out of the box. We have no time for being hardcore gamers, nor do we want to be, but we love the style of games you provide. Focus on this demographic a little more when making business and development decisions, and you will find a larger audience.