Wow, they have some nice strains. Wild Rose = Rosetta Stone x HOG. There are a lot of people who really speak highly of Rosetta Stone, say it was excellent pot.
Here's one that carries them but I know nothing about the company but they are selling in 3 and 6 packs. I don't even know if they ship to the US but they look like they have a good system to ship when you order. They also have a phone line you can call and get a feel for them. I've done that before. If it comes down to it, buy a cheap phone card and use it to call and talk to them to see if they seem like they have it together, kind of like Attitude, also based in UK.
http://www.londonseedcentre.co.uk/acatalog/sweet_seeds.html
Here's a thread from another board about Growshop Alien. Hopefully not breaking any rules... don't mean to be, just trying to provide info.