Generally speaking, the service content and quality provided by pedicure projects with different prices may be different. Specifically, the items of 298 yuan and 598 yuan in the same pedicure shop may be different in the following aspects:

1. service time: the service time of pedicure projects with different prices may be different. For example, the 298 yuan project may only provide 60 minutes of foot massage, while the 598 yuan project may provide a longer full-body massage.

2. Service content: pedicure projects with different prices may provide different service content. For example, the 298 yuan project may only provide simple foot massage, and the 598 yuan project may include more kinds of massage.

3. Technician qualification: pedicure projects with different prices may be equipped with technicians with different qualifications. For example, a 598 yuan project may be equipped with a higher-level technician to provide more professional pedicure services.

4. Facilities and equipment: Pedicure projects with different prices may provide different facilities and equipment. For example, the project of 598 yuan may use more advanced pedicure equipment, thus providing a better pedicure experience.

In short, before buying pedicure projects with different prices, it is recommended that you carefully understand the specific service content and price composition of the project, and make a choice according to your own budget, demand and word of mouth.