You guys are very critical of a socket that is most likely a mil-spec design.
The only ones I've seen, are white very high quality Teflon material,
with gold-plated formed contacts. $7 is a little high, but if you think it is too high, then don't buy it.
I have blown diodes with intermittent connections like the rest of you.
But that is no reason to say these sockets wont work.
Many hi-tech electronic devices use quality sockets,
with higher reliability than we obtain from our construction methods.
LarryDFW