This is a very inexpensive set when compared to what is being sold at other online sites. Does not come with any instructions though, so you should be familiar with how to evaluate a positve culture verses a negative one, and also with how to innoculate properly. I was initially hesitant to purchase because of the low price, but I am now glad I did. Product works well.

I could not believe that the antibiotics were wrapped so well that they were still very cold upon delivery guaranteeing their efficacy. Good going!