I make custom signatures for forum and profiles. Check out my profile for the names of some of my customers.
Profile signatures:
Size: 2000x923
Prices starting at $5 million
Forum signatures:
Size: 500x200
Prices start at $1 million
Other artwork (faction pics, profile pics, business logo, etc.)
Size: 1500x1500 (max)
Prices start at $7 million
The prices vary depending on how many demands you have/how specific your vision is and how easy/hard it is for me to get the sourcematerials (stockphotography, photoshopbrushes, etc.)
Payment is half up front, half after delivery. Delivery will be done in the form of a url to the image hosted on imgur. Image will stay up on imgur for 7 days guaranteed, after that it may be removed.
All communication goes via the mailbox.
Some of my work:
Imgur