Where i live (in Canada *A*) there's this place in my fav mall called Cineam1 and u can get the 1st Season of Durarara for $50, but it's the whole first season (but it's subbed) it's also in a box set :P
Hope this helps, if u need anymore information tell me
Ты can find them for as cheap as 20 USD on eBay. There are a few suubbed versions that are free. All dubbed versions I've seen have shopping costs, but they're not sadistically high (average at $3). Beware: some may be bootlegged. That doesn't mean that the quality of the video is low in any way (I got the full series for a tenth of the price you'll find anywhere else, and it plays as it should), it just means that the disc might not be legal. Best use PayPal.