I know this thread hasnt been posted in for a while but I would like to suggest a cheaper alternative to the whole liquid ambrosia approach by way of a psionic boon trap.
I bring to you The Pleasure Machine:
Inflict Pain is a 2nd level psion/wilder power and functions identically to the Symbol of Pain spell with some small differences. It lasts 1 round/level instead of 10 minutes/level and it is a lower level power in comparison. This all ends up being a very good thing, both for the person stuck in the machine and for crafting purposes.
Symbol of Pain lasts for a minimum of 90 minutes, that's a -long- time. Inflict Pain lasts for a minimum of 3 rounds, much safer to use in case the individual wants to eventually leave it (though why they'd want to is be beyond anyone's understanding). Secondly Inflict Pain is much easier to resist, meaning once a person is 'done' with the machine, they can mentally resist its effects (though its only partially resisted). This makes Inflict Pain just much more convenient and safer to use all around, especially if these pleasure machines are going to play an important role in your character achieving his/her goals.
Psionic auto-resetting traps cost 250gp*(power point cost)*(power point cost+2).
Inflict Pain costs 3 power, thus the cost of a Psionic auto-resetting trap of Inflict Pain would cost 3750gp by itself. This is so much cheaper than an arcane version it aint even funny. Nevermind the fact that you could use metapsionics to link it to other powers too, but this is ill advised. The cost for psionic traps scales exponentially, so its best to combine multiple traps into one area than multiple powers into one trap.
I've taken this a step further, but it also requires some things that others might constitute as cheese, but i'll explain it anyway in case it interests anyone:
In my case, by way of the thrallherd (which includes things like the Chameleon Crafting feat, southern magician, etc. and me being a spell to power erudite, i've gotten my hands on an arcane version of Lesser Restoration and have included it into the Inflict Pain trap. This way the individual doesn't get exhausted/fatigued/killed from the endless pleasure they'll be feeling with nipple clamps. This turns the aforementioned 6k psionic boon trap into an 8,000gp psionic boon trap that triggers both Inflict Pain + Lesser Restoration (paladin version since it is lvl1).
I have also created a second psionic boon trap in the same vicinity to include Grease linked to Distilled Joy via the same method, with Synesthete again as the trigger. In total it costs 15,000gp for the second trap, but its a hell of a lot cheaper than a spell clock and you get exponentially more ambrosia out of it than a spell clock could ever hope to give you. This happens if you agree with the idea that regardless of how long it takes for a spell to go off normally, it still goes off in the following round due to it being linked to the first. Thus, Distilled Joy's casting time of 1 day turns into 1 standard action simply because its being forced to go off in the following round.
Using 1 trap to pull this off, it would cost a total of 45,000 gp
Using 2 traps to pull this off, it would cost a total of 23,000 gp
Using 3 traps to pull this off, it would cost a total of 3750+750+15000 = 19,500 gp (cheapest possible)
In total, it will cost 19,500 gp to create a 'pleasure machine' like this, not including crafting cost reduction feats or additional materials (such as the actual device you're attaching these traps to). I feel this method is far easier to achieve than the one listed in the guide and so much more economically friendly.
Edit: cause i fail at math