The left chest logo is the top round logo which reads "3rd Battalion, 8th Marines - Camp Lejeune, NC" wrapped around the eagle, globe and anchor. The full back logo is below and is the actual 3/8 unit logo. You can get the shirt in either black or olive drab. The logos are gold.
Any shirts with a price tag of $7 is real. The $7 is just for the shipping cost of that item. It's not the price of the shirt. The price of the shirt is $0. I can't charge shipping on some items and not others. The site isn't set up that way. If you don't want to pay for the shipping, just drive down to SC and pick them up for free.