Surplus .303Brit is getting pretty rare, I spent months looking when i got my PAL. If you find it its gonna cost you. The last few posts on the EE were $1 per round, not including shipping. The cheapest I have found is at P&S Militaria. Its $25 for a box of 48. Only problem is they absolutely will not ship ammo, even if you ask nice (believe me I tried). If you really like to shoot .303, reloading is a must. But reloading 303 is a little more costly then say reloading .223 or 9mm since the Enfields (I assume is what you shoot) is killer on brass due to the sloppy chambers they have. I also recommend you get into casting bullets.