DA is pretty good for buying online, but they only have Season 5 in stock which would the set I would recommend steering most clear of as far as BBT goes (Kaley Cuoco aka Penny has no autos in this release).
I agree about the Season 5 stuff. There is a Season 3 and 4 box with cheap shipping on ebay from Tasmania at the moment. Their price is better then from the US.
Season 1 and 2 boxes will be very costly at this point to track down.
Hope that helps
