Ouch! Doubt it will be cheap?
I did the same w my Tesoro Cortez. Small screen, so I didn't shatter it, but did gouge it good. Even though Tesoro offers a lifetime warranty, it was my misuse that caused problem, so I had to pay for shipping and screen replacement.
Word to the wise; I now keep my handheld digger on opposite side of belt to prevent this happening again.
GL
Peace