With the decline of the hobby electronics industry, here in New Jersey we have lost essentially all stores which stock cable, connectors and parts for electronic, specifically amateur radio, pursuits.
As such, I'm relegated to ordering connectors via an online supplier or, typically, amazon.
Here there are a plethora of Chinese suppliers who seem to provide perfectly adequate connectors.
IF they get the order right.
A big "IF"
I do have several additions on order for "the shack"
1. An Arrow GP146/440 antenna for general weather sat/highpower sat listening:
2. An MFJ-4603 window feed through panel:
and
3. An SDR-PLAY software defined receiver: