I don't know about you guys, but there seems to be an issue with making money using the stock market. Most people sell things in bulk, however they only buy what they need, making a large rise in inflation in the stock market and a slow deflation. Currently, the only things unnafected by this, to a degree, would be rarer items such as diamonds and xp, being that it's often bought in bulk.
Time is money helps, but we could use another plugin to generate money.