$100 non-Lord
BTW Vans is currently showing $100 for "Standard DYNAFOCAL RV-3,4,6,7,8,9". PN "EA DYNA VI-STD". This is a non-Lord mount and is "unavailable for approximately one month due to some quality issues", I don't know the brand.
If you call you can get the Lord mounts for the above mentioned $160, "EA DYNA VI-STD LORD".
There is a fellow who has a number of sets he's selling on EBay auction, one set of four per week. I don't know how many he has, they are NOS, cured in 1996, stored in their boxes, then removed from the boxes and placed in plastic bags kitted into FWF kits by the kitplane manufacturer he bought, he's not comfortable selling them to his customers so he's selling them on EBay. I tried for three weeks and failed to get a set for a price I am comfortable with considering their age, then I ordered from Vans. ACS reports the shelf life to be 20 years "per the manufacturer". BTW I've seen 40 YO rubber auto parts that seem like new but wise man say "things not always the way they seem".