My problem being, I've never sold the rights to an image before as I always retain my rights to the images I do for regular commissions so I've not got a single clue what I should charge for the full rights to the image?
I'd charge about £30-£40 for the logo itself, but no idea what I should charge for the rights. I tried looking about on my own but it was pretty confusing and figured just asking for advice would be easier.