Most wholesale customers will expect a 50% discount from your retail price. Make sure your costs and your retail prices will support that - there's no reason to give products away, or to work for nothing.
Here are some other things to think about -
What is your opening minmum order? How many of each product? Mine are set according to my experiences in selling - I find that full displays sell better than onesies and twosies, so I have orders set up that way. I also keep my batch size in mind - for instance, I wouldn't make people buy a dozen at a time if my molds only made ten bars, ya know? This may not matter to you, but you should give it a little thought.
Can your customers return products? Under what circumstances? What condition do you expect the products to be in? I personally do not take returns unless the product is defective in some way - but I know others do, so think about your policy on this.
How fast is your turnaround, between ordering and shipping? Make sure your customers know what to expect. I find that faster is better - I shoot for 3-5 days. Custom orders take longer, of course.
Do you have insurance that will cover you if you sell wholesale? You really need to have this in place.
Will you do private label work? What about custom products? Exclusive scents or formulas? You don't have to do these things, but you might be asked to do so, so be ready with your answer.
Payment - I generally get payment up front, with deposits required for custom work. Net 30 may be an option for established accounts. My policies are set based on what losses my business can afford. Your personal situation may allow more or less risk.
Contracts - I don't do wholesale contracts, though I know some people do. I just have a terms and policies sheet that goes out with my brochure. It lays out what my minimums and prices are, delivery terms, and what they can expect.
Does that cover it, or did I just cause more questions?