Finally got caught up with what you're up to, your journal got busy!!!
The only thing about seeds here is that supply is larger than demand. So you can have a freezer full of a thousand seeds but you might never sell 10% of them in the estimated 5 years they're good for. So in the meantime you are already factoring overhead like keeping the freezers running, but you also have to consider things like advertising. I know a few seed sellers and breeders around WA that are more or less word of mouth, so I think it's really things like advertising that cost so much and lead the Seger banks to charge so much.
Meanwhile, what's this I'm hearing about your soil running out in 3 gallon pots?! That worries me, my mix wasn't nearly as rich as yours and I am barely 3 weeks into flower. I am running Panama x Malawi in it and hear it can be a heavy feeder.
I am waiting to run ACE's Golden Tiger too. Except I have the original F1 run. They aparently found some old ones in their freezer so we're selling 25 for 40 euros, guaranteeing 40% germination. I'm willing to bet I get higher than that, I had way older seeds that were never stored well germinate for me.