I have a quantity of both 1 inch and 19 mm Pyrex borosilicate glass rod.  Rod length in both cases is about 47 inches.   This rod is good for glass blowing and casting.  I have used it for casting myself.

Single piece 19 mm rod price = $4.50

I have boxes with quantity=26 19mm  ( ~.75 inch rods ) if you want to buy in quantity  $90

Local buying will  save you shipping !