Expense of catheters with ozone insufflation

It's starting to run into money because I'm doing vaginal insufflation once a day and rectal once or twice. I use a new catheter for vaginal every day, and 1-2 catheters for rectal (excuse my grossness here, but it depends on if fecal matter clogs the rectal used catheter - if so I need a new one.)

These things aren't cheap. Does anyone have any thoughts on saving money? Can I reuse them for multiple days? Can I use the vaginal used catheter for rectal after completing the vaginal insufflation?

Does anyone have a good source for cheap catheters?

Thanks!