Thumb Score: +50 Amazon [amazon.com] has the 8-Piece Bosch GT3000 Carbide Glass & Tile Bit Set for $21.13. Shipping is free with Prime or $25+ orders. >In stock on March 2 Home Depot [homedepot.com] also has the 8-Piece Bosch GT3000 Carbide Glass & Tile Bit Set for $21.13. Shipping is free.