EDITED: NOS Direct connection 340 six pack intake value?

What's the going rate on a 340 6 pak intake,
Both the original AAR/ TA version in good USEABLE shape
OR
The over the counter DC versions used, and new or NOS

TIA

I’ve seen them from $800 to 1500 lately but have only seen an $800 one sell.

Thanks for responding. I'm going to assume those were used original T/A or AAR intakes.

I'm wondering what an NOS Direct connection version might be worth. I have a friend who has one and wants to sell it. It's a P numbered intake without the cylinder numbers, firing order etc. I don't really care about that as it's going on a street rod. the NOS is nice as one knows it hasn't been monkeyed with, BUT it's of little interest to the resto crowd so I'm in a quandary as to its value .
So what's a fair price for him and I ??

thanks for any help on this