Kelemvor

Howdy, We have a pair of old skis at our cabin that get used a few weekends per year. The heel piece of one of the bindings has ripped and now doesn't stay snug. I figured I could just replace that piece but didn't find anything on Amazon that looked like the same style. Can anyone let me know if this style binding is still around somewhere that I could just replace the ripped part (or the whole boot piece if needed)? Thanks.