First of all, I'm sorry to say it's going to be very long post.
Well, I know most people do not want to reveal their favorite farming place because the more rivals thare are, the less you earn. However, the place I'm trying to introduce now is something like RDM73+ (SMN74+) only place and because it isn't easy to get there, I think it's safe to share this with fellow RDMs here.
Gil-farming is basically boring because you usually farm too weak mobs like Tigers in Batallia or Goobbues in Zi'tab for example. I used to fall asleep while farming them since it's not exciting at all. I know there are other ways to make money from gardening, fishing and synthing but we cannot get beastman seals or kindred seals from these ways.
Where I usually hang around gives you both money, seals and skills up to LV66 cap. So, where it is? It is called, "Demon's Castle" among us. Have you ever searched Castle Zvahl Baileys recently? I guess you sometimes find RDM74+/THF37 soloing there. Yes, they are having fun there.
Here's where they hang around.
There are 4 demons in each room and 1 ahriman in each isle. You may know they all drop coffer keys but they drop some nice items, too. Here's the list of what they drop.
Ahriman (LV63 - LV65)
- Ahriman Tears (1K each and 13K for Dozen)
- Ahriman Lens (If you have alchemiy skill, you can create x8 prism powders from this)
- Ahriman Wings (15K each in AH, not stackable)
Abyssal Demon (Summoner, LV64 - LV66)
- Orc Piercer (sold at 8,579 gil in regular shops)
- Demon Horn (13K each in AH, stackable)
- Ice Spirit Pact (9K - 10K in AH, Rare)
Arch Demon (Dark Knight, LV64 - LV66)
- Shellbuster (sold at 4,018 gil in regular shops)
- Demon Horn (13K each in AH, stackable)
Blood Demon (Warrior, LV64 - LV66)
- Yagudo Freezer (sold at 5,321 gil in regular shops)
- Demon Horn (13K each in AH, stackable)
Doom Demon (Black Mage, LV64 - LV66)
- Demon Horn (13K each in AH, stackable)
Average income per hour is usually 40K - 50K depending on our luck. If I'm really unlucky, it is around 20K but no less than that. On the other hand, the highest is 80K per hour. Here's the list of items I got in 2 hours after killing 7 Ahrimans and 24 Demons last time.
x1 Ahriman Lens
x2 Ahriman Wings
x3 Ahriman Tears
x5 Orc Piercer
x1 Shellbuster
x6 Dark Crystal
x4 Dark Cluster (from Dark Elementals on my way to the room)
x1 SAM Testimony (not worth 
)
x2 Beastman Seal
x2 Kindred Seal
x2 Coffer Key
x3 Demon Horn
+ 3,676 gil
Total: 120K+
The main reason I like this place is that, as I said, it is RDM73+ or SMN74+ only. No other job can do the same as they do with THF sub. NIN/THF? - No! THF/NIN? - No! PLD/THF? - No! DRK/THF? - No! DRG/THF? - Never! That's why this place isn't crowded. I hate to go to popular places because there are so many people out there.
They are all EPs for LV72+ but they are all hard. I was already killed five times by Arch Demons (took 200+ damage with critical) and Ahrimans (took 400+ damage with "Eyes On Me"). These two are extremely hard. I sometimes see dead bodies of RDM75/THF37, too. It's exciting, you know. You have no chance to fall asleep. If you lose concentration, you're killed.
They all respawn in 16 minutes and this means you only have 16 minutes after killing the first one. Here's how I do.
http://www5.sppd.ne.jp/grendal/FF11/farming.wmv (580kbps, 70MB)
The only problem seems to be the fact that we cannot go AFK. Don't worry. The center (where I was resting on the movie) of the room was safe. You can leave yourself without Invisible.
Anyway, if you're interested, try this place. I think it's good for you to learn soloing technique. Many Japanese people say you cannot keep up killing 4 + 1 without Joyeuse but that's not true because I'm doing that without it. However, you need both attack+ and evasion+ gears. /THF30+ is must for 2x Evasion Bonus. I've been there since I was RDM71/THF35. I only took 4 demons until I became RDM73 but that's still OK for some good money and fun.
If you have some trouble taking them, let me know. I can show you tips. I got around 5 - 6 kindred seals after 3 hours farming here. 3 hours farming for 6 days allow me to go BCNM Manticore every week, hehehe. Have fun farming 
EDIT: Wrong Subject! "Fan" -> "Fun" What an idiot I was.
