As of 2015, the following fountain pen inks may be bought from the following purveyors in Metro Manila:
National Bookstore: Faber-Castell (selected branches only), Lamy, Parker, Sheaffer, Inoxcrom (cartridges only)
Montblanc branches – Makati (632) 813-3739, Powerplant Mall (632) 898-2347, Shangri-la Mall (632) 633-4636, Manila (632) 521-1140, Robinsons Place (632) 551-2095, Ayala Town Center (632) 850-5532
Scribe Writing Essentials – 3/F Eastwood Mall, QC (632) 900-0053, Shangrila (632) 654-5071, Glorietta 5 (632) 386-4826, SM Aura (632) 519-5346 and SM Megamall (632) 631-8477. – J. Herbin, Lamy, Sailor, Pelikan (4001 and Edelstein), Noodler’s, Platinum, Omas, Private Reserve.
Cutting Edge (Greenbelt 5, Trinoma, Eastwood, Megamall, Mall of Asia) – Waterman
Times Trading– Lamy
Everything Calligraphy – Diamine, Sailor, Rohrer & Klingner, De Atramentis, Pilot Iroshizuku (50ml and 15ml), Robert Oster
PenGrafik – Diamine, KWZ
Cosmos Bazar – Pilot Iroshizuku, Pilot (Black, Blue, Blue-Black bottled)
Pens Galore – Pilot Iroshizuku (50ml and 15ml), Pilot (Black, Blue, Blue-Black – cartridges)
Hope this is useful, happy shopping! (Not affiliated with any of these stores, the evangelism is part of being a member of Fountain Pen Network-Philippines.)