Yes, I've discovered that. Since getting the camera I've been researching the lens situation and any other than the slower 50s, the 135/3.5 and the 43-75mm are rare and quite pricey. I'm lucky it came with the 50/1.4 which is pretty hard to find in itself. It's a beauty too.
I discovered that Vivitar made a TX mount adapter for this model and so did Tamron. Both with the open aperture metering tab. I found an eBay lot of 3 Fuji ST TX mounts and bought them because I have a nice TX Vivitar 135/2.8 that is sharp and TX lenses are plentiful and cheap and some are probably pretty good, I figure. Tamron primes are very good too in my experience and I already have their 28/2.5.
Not the same as EBC Fujinons, I'm sure, but finding bargains in those lenses will take time.