I don't need any rock right now, but as a customer and small business owner, I'd like to offer some constructive advice and say you might consider getting a better picture of your rock in a nice cleaned tank to better sell what you've got.
Even though I'm not in the market for rock, I was still turned off by the picture and I'm sure it doesn't represent accurately what you've got. Good luck on the sale and I hope this helps.
-Mike