Where to buy (carbon) framesets? I'm looking for online suppliers of carbon road framesets, the major online retailers Wiggle, Evanscycles and Chainreactioncycles don't seem to have much choice available (~&lt;10 each) with low diversity in brands. 

What other (reputable) suppliers are present in the online market that have a large range of products to chose from? Or do framesets tend to be bought directly from the manufacturer? 

I ask because most brands are missing entirely and some (e.g. Specialized) only have one or two of their frames available through these sites, yet they don't sell them directly, therefore I think I'm not looking in the right places. (I am based in Sweden if you want to limit it to Europe/European delivery)
Based on your comment, I think I may have misunderstood your original question.

Most bike shops I know seem to be "licensed resellers" for just a couple of brands. My local shop, for example, stocks only Bianchi and Specialized. If I want to buy a Trek I need to go someplace else. A lot of web sites in the cycling business (certainly in the UK) are basically virtual fronts for bricks-and-mortar shops, so it doesn't really surprise me that when you go to a particular web site, you don't see a broad range of brands.

To be honest, if you are looking for a branded frame, your best approach might be to go in the other direction. Find the frame that you like, then find a dealer (either locally or through a web site). You might need a dealer's help in any case if you're looking just for a frame rather than a complete bike. But e.g. Bianchi offer frames on their site, so presumably someone, somewhere will sell you one!

In my comment I mentioned a couple of bike shops who (I think) have brought in generic carbon frames and built and branded them. That route may also be an option.