Thanks again everyone.

@paulthetafy, you write that you are starting a major site rewrite. I have a wish list:

1) More flexible pricing on shipping.

I have listed PLA for 3D printing, each spool weighs 2.3 kg and hence sending one spool is rather expensive 77CHF. However, sending two spools cost nearly the same, and sending four spools is around 120. I would like to set a base price of 70$ for one item, and 15$ for every additional item, but this is not possible with your current system.

I also list a Radeon 7990 (brand new) and a matching EK Waterblock (unopened and brand new) for 699$. Since this is an expensive item I would like different shipping options such as "standard insured with tracking" and "express, insured with tracking". For other items in the future, I might want to have these two options together with "economy shipping".

2) It appears to me that you cannot add properties to items yet. For the PLA I would like people to be able to select which color they want and at the same time have the site to keep track of how many of the various colors I have left.

3) It would be really cool if you could set up shops like you can on ebay.

You probably already thought about these things, but I thought it would be useful to give you some feedback on your site.