That $190 is purely for academics only. Aka: written portion. Most shops are going to charge around $150 for pool time, and an additional $150-200 for the open water checkout dives. Plan on a minimum of $500 to get from zero to certified. And that’s not going to count gas money, lodging, and meals if you have to travel to a remote dive location to finish up. Also worth noting, someone with additional learning needs might spend a little more if one on one time with an instructor is required. The prices I just threw out there are usually for a group setting.