No, not all 7.3 IDM are the same. Each individual unit is unique and has its own set of features and capabilities. The most basic differences between them can be found in their physical size, power output, and programming options. Some models are designed to provide a low-power solution while others provide high performance with greater control over user settings. Additionally, many products have different pricing structures depending on the size of the installation or the amount of customization desired by the end user. Ultimately, it's important to do your research before investing in any 7.3 IDM as these units can vary greatly from one another in terms of price, quality, and capability.