Which bolt handle are you looking for? The one they have listed is a big nob factory handle. Midway list them as back in stock early next month.
Savage Arms 1-Piece Bolt Handle Assembly Savage 10 110 Left Hand Large
You could also contact SSS or Stockade. They make very nice bolt handles and occasional runs of left hand ones.
Lastly, you can send a pm to bootsmcguire on Savageshooters. He used to make some DIY bolt handles that looked great. He may still be selling them.