Do i come without a weapon and pay to use your company weapon on your range

You can bring your own , "unload", and safied weapon. Make sure to call when bring your own ammo. Some of the more powerful rounds are not allowed do to the damage to the range.

You can bring your own legal weapons or rent from the range. Range time would be additional to ammo, targets, gun rental. You can bring your own targets.

Is it okay for you to share the cost with me via this medium

Yes, they have guns you can rent.