I bought this for my 4 year old because he loves dinosaures.......the directions were quite easy and there was just enough of the plaster mixture to make one complete set of bones.  I think that the impressions are very sophisticated and the mold itself is high quality.  For dino lovers, there so many other things you can do with these molds (make chocolate, play-doh).....but we love it for it's intended use:  Making them into magnets.  It's a great little project you can do over and over again........The paint pots that come with it are adequate and a separate gloss medium is a very thoughtful item to put into this kit.  The little booklet of dino info is simple but also just as adequate.  I bought this kid for around [......] and i think it was well worth it.