I have one of these as well. Mine is full grown and fat as can be, probably 4-5 inches.
These guys will eat anything. I don't see pods, ever. I haven't had a clean-up-crew since he's been in the tank, so maybe 5-6 months. Huge boom of feather dusters and asterinas (probably the only thing in the tank he won't eat).
One of my most fun fish to watch though, very active. Eats just about anything I'lll put in the tank - and absolutely destroyed the flatworm population in my tank. I haven't seen a flatworm in six months. A great overall tank addition, in my opinion. Definitely a 'must have' fish on my personal list.
Good luck with sale, I paid far more than 20 dollars for mine at Puppy Center when I got him half the size. Excellent price. I'd buy yours and keep two if I wasn't already set on fish or had room in another tank for him.