I ran into a similar problem when I wanted to get a pair of adjustable soled shoes. I am a lefty with a wide foot. I have used Linds bowling shoes for years, since the mid 90's---so A few years ago when I wanted to try them, options were limited. At that time Dexter , which seems to be the "in" brand these days didn't make a wide width in lefty shoes....and linds was out of wide lefty adjustable shoes when I had called them....To stay with linds I could have had them make me a custom pair of their Exxxtra II shoes, which would have run close or over 300 dollars if I remember right. I couldn't justify that cost at the time so I held off. Thankfully a few months later I happened to be on ebay, not even looking for shoes and I came across a brand new pair of Linds EXXXTRA II shoes , left handed, wide, and in my size for 59.95 free shipping..... Needless to say I was thrilled.
I believe you have 2 main options.........Either be patient & investigate & wait for a good deal to pop up like I did, or ..shell out the extra money. I hope you get some at a good price.
Brad