2X is the national standard for wholesale & 4X for retail.
If you really want to compete you need to offer 50% off your suggested retail price as your wholesale price. It's the US standard. I worked at the Dallas World Trade Center & I am going to have to say 99.99% of serious buyers & shop owners won't even look at a line unless they are offered 50 off retail.
The reason? If you offer a different amount off, like 30%, your retail price will undercut their retail price.
For example: You sell soap for $3.00 a bar, you wholesale it for $2.00 a bar, the shop needs to double that & sell it for $4.00 a bar to cover rent, electricity, employees, advertisment, etc.
If the customer sees you sell it for $3.00 online or at a craft show & they just bought it for $4.00 they are going to get hot & be angry w/ your wholesale customer who in turn will probably not be a repeat customer for you.
You will need a minimum initial order of $X and minimum reorder of $X.