the easiest way to figure what to charge: Ask yourself realistically what wage you deserve/need for your work per week…ie after rent, groceries, etc, i need at least 350/week. plus, i have x experience and x skills i had to draw on for this project so that # gets bumped up to say $550. Now divide that by 40 and figure out how many hrs it took you to complete, from conception to completion…now multiply the 2, and thats what u should charge.
Trying to find out what the ‘going rate’ is is often hard to do. Also, this sort of logic keeps the pay for all designers at a standstill: everyone is too concerned with having the same/lower price than everyone else, rather than charging what they need to in order to make a living. You think television ad agencies got rich by making sure they undercharged? If you are providing a service, then like all other services, the cost of sustaining that service and the cost of sustaining your own standard of living must be reflected in the price. This is the only way that new media designers will get the respect and pay that they deserve, alongside the designers and cultural producers of other media.