Yeah, ammo for 300 Savage and 250-3000 isn't the cheapest. Hornady made a run you can sometimes find for under $30/box, but it's really best to handload it. Easy to do if you reload.

“The Savage 99 Pocket Reference”.
All models and variations of 1895’s, 1899’s and 99’s covered.
Also dates, checkering, engraving.. Find at www.savagelevers.com