I brought this one because I was told that it gave more correct star-images when photographing than the TeleVue Corrector at that time. The corrector is about 25 years old. From memory, this Corrector cost quite a bit of money back then.
I have brought another Coma Corrector since, however it turns out that I just don't like them.
I will supply it in its original box, although that is looking a bit tatty at the edges. The Corrector itself is in good condition.
$35 posted anywhere in Australia. Express postage is an additional $3.