With the tremendous number of imge-edittors out there, it would have been rather easy to get a picture of a wall, and have this "for sale" sign, of sorts, written on it.
Just that, it's no (Adobe) photoshop job; it's a very real picture of an expression by someone for anyone to buy guinea pigs and ducks from them.
Last time I looked, "banners" like these were done properely. Properely done, it requires a permit from the Accra Metropolitan Assembly that regulates the posting of such signs.
Fancy that! It has a website that is updated regularly!
