You don’t need any fancy equipment to get started in learning the violin.  No matter what you start out with, it will take years to develop the skills to become a world class violin player.  The basic tools you will need are a bow, rosin, shoulder rest, and case.

The bow usually comes with the violin, but if you buy separate, they can be just as pricy as the violins.  The rosin helps the bow grip the string.  It is cheap, and can last long with the right maintenance.  A shoulder rest is a personal choice, and it can take a while before you find one that works for you.  If you want something that hold your violin up without lifting your shoulder or clenching your neck, a shoulder rest is recommended.

For the case, that may come with the violin, but if not, they are not expensive and can come with additional storage pockets.  There are additional optional equipment such as mutes, cloth, and metronomes.  They are useful for maintenance and assisting in lessons.