MGMAT Self-Study Toolkit - helpful for quants

The manhattan prep self-study tool kit is an excellent resource for quantitative aptitude. It is not all that great for verbal, in my opinion.
It includes the following - You get 12 Manhattan GMAT Books + 3 Official Guides
- Includes a one-on-one session with a GMAT instructor
- Includes GMAT Navigator tool
- 5 Video lessons from GMAT Interact
- 6 Manhattan GMAT CATs + online quizzes
- 6-month access to GMAT Club Tests is included, a $250 value

The five video lessons were really helpful. Also, the 6 tests are quite high in rigor. It may not replicate the exact GMAT level but will give you a fair estimate on where you stand.