Concert pineapple ukuleles are very few and far between. As far as I know, there are none in the entry-level price range. In fact the only two I know of are those demonstrated in this video: the Pono Spalted Mango Pineapple and the Mele Mahogany Pineapple. Neither of the are particularly cheap, but the certainly sound and look good.

The only other option I know of is the Pineapple Flea ukulele. The flea does come in concert size and it does have the pineapple decoration. The shape, while similar, isn’t the traditional pineapple shape though.