Research selling prices of items similar to yours. Look up completed sales or current listings of items similar to yours. Find the high- and low-end prices, and price your object around the median price level. If you want your item to sell quickly, price it at the low end. The condition of the item also affects the price. Items in poorer condition should be priced at the lower end. Also, consider how many listings there already are of items similar to yours. If many similar items will be competing with yours, you may have to set the price lower to get the sale.
In the past few years, craft marketplaces have popped up all over the Internet and offer a place where you can sell your handy work to those who appreciate handmade items. Etsy is the most popular marketplace out there. You can create your own web store on this site and list your handmade crafts, vintage items, and craft supplies. There are plenty of other sites on the web that cater to arts and crafts of all types. You can earn some extra money while enjoying your favorite hobbies.