Recently, I went shopping on eBay again. While I do not recommend using used equipment from eBay for production, surplus equipment can be a great opportunity to supplement a home lab. This time, I picked up a Netoptics Director including inline modules for about $100. Overall a pretty nice deal. Of course, equipment like this usually comes with no warranty, and vendor support can be spotty in particular as Netoptics now only exists as a part of IXIA and IXIA has been purchased by Keysight. I am not sure how long ago the Director line of equipment went "EOL" and was only able to find manuals on 3rd party websites. But making equipment like that work is part of the fun.