public void Open()
 {
     UIManager.Instance.isInMenu = true;
     vendorGroup.interactable    = true;
     vendorGroup.blocksRaycasts  = true;
     vendorGroup.FadeInCallback(this, .2f, (done) => { vendorGroup.alpha = 1; });
     SoundManager.Instance.PlaySound(vendorOpenSFX, transform.position);
 }