It is $25 where I am.It isn’t $25, it’s really about $15 since it always includes a fill. The shop does have to drain the tank, open it and inspect it. That does taKe time. Scuba isn’t a cheap sport, this is just part of it. Most people who own their own tanks dive multiple times a year. If you get 15 fills in a year, that is only $1 a fill.
If you aren’t getting that many fills a year, it probably isn’t worth owning your own tanks.
Time? Even if the customer doesn't bring tanks empty, what does it take for the employee to start draining it? 30 seconds?
Removing the valve? 30 seconds?
Using the light? Another 30 seconds?
So less than 5 minutes work?
Are you serious that this actually takes mich time?
For what they do, it is a ripoff. Doesn't matter how many fills are done.