What is a Clay Cowgill multi tempest? I have heard of it, but not sure what it is. I did a quick search and just found mentions of it but not a good description. pardon my ignorance.
I think they were about $75. Who knows what one is worth at the moment? They popped up on ebay almost immediately after the last run at a substantial price mark up.
I am fairly certain Clay probably has them. I assume he just got tired of selling and supporting his kits. If you send him a nice email at the right time, you might score one.