I've found quite a few on AliExpress, not particularly cheap for Chinese stuff, and some sellers that have large sizes also carry smaller ones, so I often see a model that I'd love to get only to find out that particular one isn't large, but there's still pretty stuff to be had.
Some of it is rather extreme stuff, but anyway, you may want to search for LLXF brand

I have purchased a few size 13 with a 4" heel at nordstroms Rack. average between 29.99 - 59.99 U.S. and of course you can shop on line. I'm not far from Hollywood California so I usually go down there. these are from the Rack