I'm not disputing whether it is fair or not. I'm disputing the fact that I purchased gold to convert to cash for items I wanted to buy, deliberately to avoid using any cash I had earned throughout that week. That the bit you seem to keep misunderstanding.

But to be completely honest, that particular weekly prize is NOT worth the hassle of saving for. So as I stated above, I shall not bother buying gold anymore to convert to cash for units. I shall just use my earnings instead.