New products always add more risk. When we do our product research, we rely quite a bit on the history of the product. It allows us to see trends with the prices, the sales rank, the number of sellers, etc.
When we don't have this information, the product is much more of a gamble. Even if you have good profit and it looks like it may move fast, we have no idea if the product is prone to price drops, if there are big spikes in the number of sellers, if the sales rank tends to fall off in a certain season, if Amazon will join the listing, if Amazon will remove the listing or move it, etc.
If you were to go forward with a product that was new to Amazon, you would want it to be low cost with good profit and you would want to start with a very small amount (an investment amount that you comfortable risking to test the waters before ordering more).