This guy bought a bunch of cabinets from Epiphany Audio old stock. https://spokane.craigslist.org/ele/d/audiophile-keeper-speaker/6368900567.html
Here is what I quoted him for the parts needed to build them out:
According to an exchange I had with Tang Band I can get a run of the woofers made with a 50 to 55 day lead time. I have to pay for them half down and the second half before they ship. After shipping, customs and duty I can sell you the woofers for $39 each. $1,560 per pair.
And I'll drop the price of the tweeters to $69 each. $2,898. per pair. I stock them and you can see them here: http://gr-research.com/grneo3.aspx
$300 for the crossover parts and plus $160 to add Platinum by-pass caps to the tweeter circuit. The Platinum caps were an additional upgrade.
A set of tube connectors is $59, and wiring is $75.
You'll also need 10 sheets of No Rez for each cabinet. They are $39 each.
The 2" flared ports are $6.00 each.
Everything is in stock except for the woofers. They have to be custom made and there are no other woofers that can be used.
If a group of you guys want to build these out then it is worth it for me to order the woofers. I also have a pair of the cabinets here and I have one other guy that owns a pair of cabinets that really wants to build them out. But I need to at least have a home for half of the 500 minimum order for the woofers or it won't be worth me having them made.
And these originally sold for $27,900 a pair.