This is a tricky question for most visual artists. You should definitely take into account the time it takes you to create a piece of art or organize a photo shoot (and set yourself a reasonable hourly wage). Then there’s the cost of materials which should be included in the final price.
It’s always a good idea to do a bit of research and find out what similar artists/photographers are charging for their work. Have a look on stock photo sites (and see their features), art gallery sites online and POD (print on demand) sites and use a comparable price for your own art to what other artists are charging. Naturally you have to take into consideration whether you are selling original art, limited editions, photographs, reproductions or art prints and price accordingly.
Would love to hear your thoughts on this!
If you’d like more information and ideas on marketing and selling your artwork online you can receive my free mini-guide: ‘Learn how to market and sell your art or crafts online with this 3 tips mini-guide’ here