Copying Spells into the Spellbook

6th Level: Arcane Gate, Chain Lightning, Contingency, Globe of Invulnerability, Programmed Illusion, True Seeing (1800gp)
7th Level: Forcecage, Plane Shift, Sequester, Teleport (1400gp)
Total: 3200gp
Downtime: 20
...
4x Potion: Superior Healing (8d4 + 8), 1.000gp each
1x A gilded ladle worth 500 gp (Tasha's Bubbling Cauldron)
1x A statuette of yourself carved from ivory and decorated with gems worth at least 1.500 gp (Contingency)
1x Powdered ruby worth 1.500 gp (Simulacrum)
1x A miniature portal carved from ivory, a small piece of polished marble, and a tiny silver spoon; worth in total 15 gp (Mordenkainen's Magnificent Mansion)
25x Plane Shift Forked Metal Rods (25x 250gp = 6250gp) [Material Plane, Feywild, Shadowfell, Astral Plane, Ethereal Plane, Elemental Plane of Fire/Earth/Water/Air, Limbo, Mechanus, Acheron, Nine Hells, Gehenna, Hades, Carceri, Abyss, Pandemonium, Arcadia, Mount Celestia, Bytopia, Elysium, Beastlands, Aborea, Ysgard]

Spell Scrolls:
2nd Level: Arcane Lock, Arcane Vigor, Darkvision, See Invisibility(4x150gp)
3rd Level: Major Image, Sending, Slow, Tiny Servant (4x300gp)
4th Level: Greater Invisibility, Ice Storm, Leomund's Secret Chest (3x500gp)
5th Level: Animate Objects, Circle of Power, Cone of Cold, Far Step, Legend Lore, Rary's Telepathic Bond, Passwall, Hold Monster, Planar Binding, Telekinesis (10x1000gp)
Total: 13.300gp
Copying Spells into the Book: (4x100)+(4x150)+(3x200)+(10x250) =4.100gp
...
1x Ritual Spellbook, 25gp
1x High Magic Spellbook, 25gp
1x An exquisite chest, 3 feet by 2 feet by 2 feet, constructed from rare materials worth at least 5.000 gp, and a Tiny replica made from the same materials worth at least 50 gp (Leomund's Secret Chest component)

Buying:
5x Potion of Supreme Healing, for 5.000gp each
Mundane Items:
10x Antitoxin, for 50gp each
2x Caltrops, for 1gp each
1x Healer's kit, for 5gp
1x Ink, for 10gp
1x Ink pen, for 2cp
5x Oil, for 1sp each
500x Paper, for 100gp total
10x Perfume, for 5gp each

Copying Spells into the Spellbook

6th Level: Arcane Gate, Chain Lightning, Contingency, Globe of Invulnerability, Programmed Illusion, True Seeing (1800gp)
7th Level: Forcecage, Plane Shift, Sequester, Teleport (1400gp)
Total: 3200gp
Downtime: 20
...
4x Potion: Superior Healing (8d4 + 8), 1.000gp each
1x A gilded ladle worth 500 gp (Tasha's Bubbling Cauldron)
1x A statuette of yourself carved from ivory and decorated with gems worth at least 1.500 gp (Contingency)
1x Powdered ruby worth 1.500 gp (Simulacrum)
1x A miniature portal carved from ivory, a small piece of polished marble, and a tiny silver spoon; worth in total 15 gp (Mordenkainen's Magnificent Mansion)
25x Plane Shift Forked Metal Rods (25x 250gp = 6250gp) [Material Plane, Feywild, Shadowfell, Astral Plane, Ethereal Plane, Elemental Plane of Fire/Earth/Water/Air, Limbo, Mechanus, Acheron, Nine Hells, Gehenna, Hades, Carceri, Abyss, Pandemonium, Arcadia, Mount Celestia, Bytopia, Elysium, Beastlands, Aborea, Ysgard]

Spell Scrolls:
2nd Level: Arcane Lock, Arcane Vigor, Darkvision, See Invisibility(4x150gp)
3rd Level: Major Image, Sending, Slow, Tiny Servant (4x300gp)
4th Level: Greater Invisibility, Ice Storm, Leomund's Secret Chest (3x500gp)
5th Level: Animate Objects, Circle of Power, Cone of Cold, Far Step, Legend Lore, Rary's Telepathic Bond, Passwall, Hold Monster, Planar Binding, Telekinesis (10x1000gp)
Total: 13.300gp
Copying Spells into the Book: (4x100)+(4x150)+(3x200)+(10x250) =4.100gp
...
1x Ritual Spellbook, 25gp
1x High Magic Spellbook, 25gp
1x An exquisite chest, 3 feet by 2 feet by 2 feet, constructed from rare materials worth at least 5.000 gp, and a Tiny replica made from the same materials worth at least 50 gp (Leomund's Secret Chest component)

Buying:
5x Potion of Supreme Healing, for 5.000gp each
Mundane Items:
10x Antitoxin, for 50gp each
2x Caltrops, for 1gp each
1x Healer's kit, for 5gp
1x Ink, for 10gp
1x Ink pen, for 2cp
5x Oil, for 1sp each
500x Paper, for 100gp total
10x Perfume, for 5gp each