Short answer to some fairly involved questions. Best place to find hard money lenders is through mortgage brokers. All types of lenders market their services through brokers as they are a primary conduit for finding borrowers.
Your request of a "reasonable" hard money lender is very vague. In general, hard money means loans based on the strength of the collateral rather than the strength of the borrower. As such, those seeking hard money are borrowers with very high risk factors that traditional, institutional lenders won't touch. In dealing with borrowers that no one else wants these lenders put their money at considerable risk so they expect a sizable reward.
Again, hard money is typically lent by private individuals or investment groups so there are very few hard fast rules.