Tip of the (Yester)day: Don't sell yourself short

When selling your work, be mindful of pricing. Figure out what you are paying for materials, pay yourself a fair wage for your time, and consider operating costs like Etsy fees, Paypal fees and shipping/packaging expenses.

Many sellers come up with a formula for pricing their items. You can get some good advice here and here on the user wiki.

Don't forget wholesale vs retail! Most wholesale buyers assume the retail price is double the wholesale price. If you are hoping to be "discovered" through your Etsy shop by a boutique or two or twelve, make sure your prices reflect this. If they are not, state this in your shop.

Above all, don't let other people's underpriced items discourage you. For whatever reasons, some Etsy sellers just aren't charging a realistic price for their work. Maybe they just consider Etsy a hobby instead of a business, or they don't really need the income. Its useless to get angry about this! A business that isn't covering its costs has no hope of growing or succeeding in the long term. Focus on developing your designs, customer service and innovation---and make sure your prices are fair. You deserve it!