You set the suggested retail price. You sell to the store at 1/2 of the retail price. A few will mark it up a little more
Consignment stores work on a lower markup but you have lots more hassles with them. For consigment you set the price and the store pays you 60& or sometimes 70% of the selling price.
When you sell it yourself at shows or from your home you should price it at the same suggested retail price. Keep the perceived value up. Because you are selling direct you might discount it 20%. But never sell good product to the public at the same price you ask a store to buy it. It won't work. If you can only get โ for it how can a store get 贄. Conversely, if a store can get 贄 why are you willing to accept โ?(Closeout or last year's style is different - discount it as much as you need to to get rid of it.)
Crafts Report is a good magazine to read. They talk about these issues from time to time. Their site is http://www.craftsreport.com
Joan is right about mark up formulas being hard to do. I often just look at my pieces and price it at what I think it looks like it is worth. I've been doing this for a while so I usually have a good idea what it will sell for. Sometimes it sells so fast I know I was too cheap. Sometimes I use beads I've had for a long time and discover, after it sold, that I can't get them any more. But I still made money, I just can't replace the parts for the same price. Sometmes I like a piece so much I mark it way high because I don't really want it to go away. But that's mostly for nicer one of a kind pieces. For the bread and butter I used to make for stores I made sure I tripled (or at least doubled) my cost to cover my time and overhead. The suggested retail was 4 to 6 times my materials cost.
What's even more important is that you always have fun making and selling your jewelry. Don't lose sight of that!
The March 2002 issue of the "Bead Society of Greater New York Gazette" mentions an upcoming talk by David Feldman, co-owner of craft supply shop Metalliferous. David will be discussing "How to Price Jewelry", unveiling a computer program he's written to handle all the details of this process. Hidden costs, profit margins, and more will be covered by his program.
For more information, call the BSGNY information line at (212) 650-1778.