why is SMA cable so expensive?

I have a D-link ANT24-0700 2.4GHz Omni-Directional 7dBi indoor antenna. It has a 6ft. cable that I want to add an extension to so I have more area to move it for a better signal. I checked various websites for prices of SMA cables and found even a short cable isn't cheap. For example

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wants $21 for a 10ft. cable.

Also, I was told by one website's tech support that adding more cable length will cause signal loss. Why is SMA cable expensive and will more length really degrade the signal to a significant degree? Thanks.

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Posted 5 years ago by sillyputty in Wireless Networking

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