Occasional unexpected rounding of the price value in orderbook and listorders

[krrprr]

Background

The orderbook and listorders occasionally return different values for price. Some values seem to be rounded.

Steps to reproduce

Place an order with price of:

• 0.00520001 -> listorders includes the same price but orderbook, when called with precision of 8, returns 0.0052, while for example the price of 0.00282828 remains the same in both calls, same precision.
• 0.036 -> orderbook shows it as 0.03599999, listorders returns correct price.
• 0.00396999 -> orderbook returns correct price, listorders returns 0.00397`.