The cost of Magento 2 admin panel optimization services varies widely based on several factors. One of them is the development team's experience and skill set. Agencies or independent contractors with greater experience typically charge more for their services. The cost will also vary depending on whether you require ongoing assistance and maintenance.  And most importantly, it will depend on the scope of work. The more complicated the admin panel, the more time and effort it will take. As a result, the price will increase. Given this, the cost of Magento 2 admin panel optimization services could range from a few hundred to several thousand dollars.