Not so much in this case as the Welder and a few bits was nearly $2k AUD.
The first fill of Argon (E size) was $430 (circa $320USD)and the refills are about $160 AUD (about $120USD. So I now own an exchange bottle from supplier X.
Going back 30 years ago locally the only way to get Gas was to rent the bottles instead of 'buying' one which for a home user with a low turnover of gas became a major negative of Oxy/Acetylene, Mig and Tig. Rental from memory was around $80-90 AUD a year per bottle.