@retina_restoration is talking about the number of tries to get a wet plate collodion shot right the first time. I share his experience that it's extremely rare to nail it on the fist try; you virtually always have to adjust exposure and/or development. I think you're probably talking about something else.
Yup. Diethyl ether! Fun stuff. Smells great too lol.
In all seriousness, it is common practice to mix the ether with ethanol for long term storage, as this stabilizes the ether and prevents any "unwanted outcomes".
In a lab that I worked at we used ether, always in metal cans, small amounts. No big trouble if you handle it properly. Godawful smell. When I was a kid guessing 10 years old (c 1966) I had my tonsils removed. Yep ether drizzled out of a pint metal can directly onto a gauze pad in a wire frame held over my face. I'll never forget that. I had propofol injection for colonoscopy. I remember the smell of vinyl of the oxygen mask , perfect.
My answer to all this is to bite the bullet and buy a whole bunch of whatever I need. Then make photographs with it.
Getting into the carbon printing back in the early 90s, certainly helped as it’s not an expensive process. The 11 x 14 platinum palladium prints are a different story but I recently bought a couple thousand dollars worth of metal and will use it till it’s gone.
Any print sales go back into buying more material.