Apart from J&L I don't know of any cheap ones.
Ah, thanks, I didn't try eBay. The AliExpress ones are all weird things like this one, I assumed eBay would be the same
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That looks pretty folder specific given it's 58T. Depending on what tooth size you're after, 104mm might be difficult to find as the cheapos only go up to 38.
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Apart from J&L I don't know of any cheap ones.