Margin is not simply calculated as a percent of $1.00 on your cost. You just "marked up" the product 40% of the actual cost.
Your 40% profit margin on a $1.00 cost good will be a price of $1.66 to your dist. He in turn will want, for sake of defining this scenario, 40% as well. He will then sell it at $2.76. The retailer will then want 50% margin making it $5.52.
The one thing you don't want to do is set a lower price than any other potential dist will price it at once he takes it to market. This is tricky. Of course you want to make sales as quickly as popssible, however, if you are selling to Bars direct at $1.50 and your "other" retailers find out they have been paying over $2 you will have some serious explaining to do.
Go to Staples or Office Depot and buy a simple business calculator that has a "MGN" button on it. that stands for margin. It will save you a great deal of headaches and actually make your job easier.
Whether you think can or think you can\'t, you\'re probably right!