Part of the reason of the low turn around in price is that none of the Amigas shipped with that drive and very little, if any software, was distributed in that format. Mostly its a collectors item for the sake of completeness or in some rare scenarios, people looking to emulate an 8088 machine due to old software existing on that medium. I'd like to have one but I dont think I'd pay much for one.
As stated, it's not terribly useful except for niche things. For instance, I have one with the speed turned down to read and copy 1541 disks. I actually have a third-party 5 1/4 which can read 1MB floppies, and I've used that before to read IBM disks.
