... So if anyone wants to make money, why use the milking room setup, when getting the 'Bondage Applier' fetish gives sealing enchantments for free? Free enchants used serially (up to the 100 limit) on expensive clothing make for a solid money maker, especially the Diamond Necklace that Nyan sells at least one of per day. Once I get the necklace, I have a saved enchant that makes it very fast if I somehow run out of money.
Don't have to get a slaver license, or auntie's permission to have slaves in milking pens; just do the enchanting 'quest'. Then simply get a few pieces of clothing and at least 5 essences, take the bondage applier fetish with the essences, go to Nyan's and enchant your most expensive "something" with 100 Heavy Drain Sealing enchants, sell it, buy the most expensive item without enchantments you can afford (a stack would be nice), enchant x100, sell, repeat until you can afford one necklace (~200k, IIRC). You net about 4mil, IIRC and can then buy all the others, all the spellbooks, all the scrolls (probably have to wait an hour/day to really fill all the spells up), and buy all the essences.
I only set up milking if I feel like it.