This 10 DVD PLC training dvd course is quite pricey at $2289 for the individual. But an excellent deal for a company purchase or college purchase as it can be used as a PLC training video library to check out to employees or students. Thus being a one time purchase for unlimited employees or students. That unlimited user aspect when compared to online video courses where one would have to pay per user, it doesn't take long for it to pay for its self and become pure profit. (individuals who could afford the initial purchase, could sale the videos after benefiting from them to recoup some of the investment in their future. Another advantage of the DVD format over an online monthly or annual subscription format, is the purchaser owns them for ever, they never expire, so has them as a refresher. This particular PLC training video course library doubles as not only delivering a complete scholastic course, but as the instructor is showing real PLCs and and applications, delivers some of the apprenticeship/instructor delivered course aspects too. (In contrast to just reading a book, or going through a software course.) It supplements both. It also comes with a workbook to aid in retention.