WORKS GREAT, AS ADVERTISED.
Used one tube to repair seven 13x13 tiles throughout my house (still have half a tube left).  This product worked awesome and saved me a lot of work as I didn't have to replace any tiles.  Would recommend this to all, if you can follow simple directions it will also work for you.  One tip I would add, after drilling the holes in grout I used a scribe to ream out hole under the tile (this ensured glue would flow under the tile).
Rating: 5 stars