I don’t want to sound harsh, but did you actually try searching Tayda, Stompbox Parts, or any of the other vendors that people recommended? I just went to Tayda and entered the search term “1uf” into the search bar. I hit enter and had no trouble finding plenty of 1uF electrolytic capacitors for pennies a piece. I did the same at Stompbox Parts and immediarely found the 1uF electrolytic capacitors. Same for 10uF and 22uF electrolytics. None of those parts are remotely rare or difficult to find, so I’m not sure what the issue is here.