Sony Micro Cassette m-470 - Burner (3.6 cm, Black, 14.5H, AAA, 250.0 MW, 97 g)

why does it costs over $400?!

Does that sony unit have automatic shut off when rewind, ff, or played to the end? [as others do not and thus the batteries drain dead.]

Can i record from my pc onto a microcassette tape? by connecting from the line level output of my pc to the mic or the headphone jacks of this?

any sort of warranty with this ?