Okay I have done a few science boxes but none have been as great as this one. The quality is great we have gotten 4 different science experiments and yes some do take time to do but that is science. Instructions are very user friendly. Shipping is very quick and efficient. If you have hands on learners that enjoy science this is the box to get. Cannot wait to get more boxes. I will also add I am using these boxes for a 2nd grader who is doing home schooling. So our science is based off what he gets each month. If it is more advanced stuff we just do it for fun on the side.