Various Kinds of Computer Switches

#1- Black Box 2Position Data Switch, Pushbutton, Compact, w/Book- SW172a -
Black Box 2position Data Switch Pushbutton Compact w Book SW172A REDUCED | eBay

#2- Data Transfer Switch - 4 Way Switch Box, VGA/DIN Connectors- Data Transfer Switch 4 Way Switch Box VGA DIN Connectors REDUCED Price | eBay

#3- Bi-Tronics 4 Way Data Transfer Switch Box - 25 pin Female Connector- Bi Tronics 4 Way Data Transfer Switch Box 25 Pin Female Connector REDUCED | eBay

#4- Data Transfer Switch, 2 Way, Phone Switchbox - RJ11- RJ12- A-B Switch-
Data Transfer Switch 2 Way Phone Switchbox RJ11 RJ12 A B Switch Old Stock | eBay

I noticed a lot of these pieces have a reduced price. After Ebay fees. Is it worth listing these for a few dollars?

Sometimes yes and sometimes no, I started them a few dollars higher and bring them down a dollar at a time when I relist.
Only costing .10 to list,,,:)

Over time the relisting fees add up and eliminate profit. I find its best to offer free shipping and have the lowest bin price on ebay. I aim for volume of sales and fast turnover over getting the best price per item. If you have items that are slow to sell you are better off having a store, 30 day listings 20 cents per month for a basic store plus 150 free item per month, so you only get charged the listing fee on items above 150. A 30 day listing gives you 4 times the exposure of a 7 day listing.