Definitely. One needs to read between the lines and understand the fees to expect when listing at eBay. If you are not so careful, I assure you it's not going to be fun, and from what you have shared, you learned about it the hard way. Thanks though for your willingness to share this truth for the benefit of all new sellers like you.

It helps if you strive to build your feedback first. As a more trusted seller, you will be capable of selling higher priced goods more effectively. It is a must that you use pictures that you have taken yourself, not stock photos. Buyers are now more aware of seeing a real photo as reflecting that the item is described as it is, and not made up.
And as for the fees, don't forget the Paypal fees, which is actually close to 13%!
Have a nice day!