Not sure how you find your prices. SW motech cost 180 Euro or 219 USD. Not sure they ship to US. But I got em on both Honda and Z900 and both survives a crash with ease.
Looking for crashbars you need good steel and reputable manufacturer with accurate fitment to bolt holes in chassi.
You can extend your search to "stuntcage" and get some other results. I seen "CRAZY IRON" in real life and those are some very nice looking frames also. A bit bulky :D I recomend try order from Malaysia or Thailand, aftermarket in Asia is huge. I wouldnt recomend Ali Express untill you actually done a crash with one of their crashprotections because of "fake" materials and shitty quality.
When you sell your bike later on you can sell your crashbars also and get some of your money back. I prefer "bars" instead of "framesliders". Framesliders get caught in most stuff and bends and also bends the chassipart its attached to and sometimes breaks the frame. Crashbars on other hand are bolted to 3-4 locations and is extension of the chassi after mounting it.