Umm... I think the only ones you'd be able to find are the first 4 or 5... the last 3 JUST came out on TV, BD isn't even finished in USA (I think?) And if that isn't finished, then Platinum isn't even out yet, DP finished a year or two ago, and DVD's don't come out that fast, unless they planned in advanced, the middle ones, their probably working on for DVD's but yea, for a fact, I know you can get Orange Islands, and if you can get that, then you should be able to get Indigo Plateau, then Johto Journeys may be out, but I'm not sure, then again, I'm just guessing, because I don't spend time scoping out Target/Best Buy/Walmart/any other place that sells DVD's for Pokemon ones so... yea, don't go by my answer lol

You can find them in those stores.