Well, I managed to get a 3D model of my building blocks put together (Thanks Paul) and I've turned to 2 online services to get some of them 3D printed.
The 2 services I decided to use, primarily based upon price, were Shapeways and Sculpteo. I was able to easily upload the 3D model to both sites and with just a few clicks to choose the material and finish was able to order the model to be printed.
The prices on both sites are very similar and competitive. The main difference for now is the delivery times. Shapeways estimated a delivery of 10/30 to 11/1 and Sculpteo a delivery of 10/25.
Once the respective models are received, I will be reviewing them in more detail.