The manufacturers only sell complete setups now because they can guarantee that the correct torque has been applied to the reg and bottle when they are screwed together. It is a health and safety issue which affected their insurance premiums.
The was the easiest and safest route all round.
Wasn't there a hooha not to long ago about regs fit for purpose?
The difference in price between the two of your example comes in the material and construction. Aluminium bottles are deep drawn and are fairly easy to manipulate and machine thus being cheaper to manufacture. The Luxfer ones are a composite material and take more time and effort to make. They also wear machines out quicker.
The was the easiest and safest route all round.
Wasn't there a hooha not to long ago about regs fit for purpose?
The difference in price between the two of your example comes in the material and construction. Aluminium bottles are deep drawn and are fairly easy to manipulate and machine thus being cheaper to manufacture. The Luxfer ones are a composite material and take more time and effort to make. They also wear machines out quicker.