The speed of the service was excellent. The quality of the camera obscura up to a high standard, but everything else could be better. I am not complaining, but the corners on the instruction book are creased. The stickers were folded and creased. Also, the exposure calculator was the same as the stickers, folded and creased. It could all have been avoided. Some of the instructions on how to make the exposure calculator don't make sense. Anyone new to photography and building the calculator has got a problem. The price, build quality and speed of service are brilliant!