The Short Version: Why This Comparison Matters
If you're managing office supplies for a team—especially a team that writes a lot—you’ve probably looked at Pilot’s lineup and wondered: Kakuno or G2?
I’m the procurement manager at a 120-person marketing agency. We spend about $4,200 annually on writing instruments and ink. Over the past 6 years, I’ve tracked every single order in our system. I’ve gone back and forth between these two pens more times than I can count. So here’s my take: they serve completely different purposes, and picking the wrong one costs more than you think.
We'll compare them across four dimensions: writing experience, total cost of ownership, durability in the office, and how they handle a deadline crunch.
Dimension 1: Writing Experience & Use Case
This is where most people get stuck. The Kakuno is a fountain pen. That means it uses liquid ink, which flows onto the page with almost zero pressure. The G2 is a retractable gel pen, which uses a pressurized gel ink cartridge. They feel completely different.
For the Kakuno, you get a smooth, expressive line. It’s fantastic for signatures, journaling, or any task where the act of writing matters. But it’s finicky. If you leave the cap off for 10 minutes, you might get a hard start. If you use cheap paper, you’ll get feathering. If you shake it too hard, you’ll get a blob of ink on your desk.
The G2, on the other hand, is a workhorse. It writes on almost any paper—printer paper, glossy receipts, even slightly damp cardboard—without skipping. It’s consistent. You pick it up, you take notes, you put it down. There's no ceremony involved.
Conclusion: If your team primarily uses pens for note-taking, data entry, and daily tasks, the G2 wins. If you have a few power users who value the writing experience and are willing to deal with a bit of fuss, the Kakuno is a lovely treat. But don’t buy 100 Kakunos for the sales floor—they’ll just get frustrated.
Dimension 2: Total Cost of Ownership (TCO)
Here's where things get interesting. I did a TCO analysis back in Q3 2024, comparing a team of 10 writers using Kakunos (with cartridges) vs. 10 writers using G2s (with refillable barrels). I tracked it over 6 months.
The upfront cost is deceptive. A Kakuno body is around $12-15. A G2 retractable is about $6-8. So the G2 seems cheaper. But the G2 is disposable after the ink runs out—you can't refill it. The Kakuno uses standard Pilot ink cartridges, which cost about $3 for a pack of 12 (that's $0.25 per cartridge). A single cartridge lasts about as long as a G2 refill.
Let's do the math:
- 10 G2s x $7 (average) = $70 upfront. After ~6 months, all 10 are empty and need to be replaced: $70 again. Annual cost: $140.
- 10 Kakunos x $13 (average) = $130 upfront. After 6 months, you’ve used maybe 10 cartridges per pen, but you only bought the pens once. At $0.25 per cartridge, that's $2.50 per pen per 6 months. So: $130 + (10 x $2.50) = $155 for the first 6 months. The next 6 months? Just $25 in cartridges. Annual cost: $180.
Wait—$180 vs. $140. The G2 is actually cheaper in Year 1? That surprised me. I had to re-check my spreadsheet. I was mixing it up with our old habit of buying disposable G2s. The disposable barrel G2s are about $3 each, which makes them much cheaper per unit. But the retractable ones are pricier.
Conclusion: If you're buying the retractable G2, the Kakuno is actually more expensive in the first year but breaks even in Year 2. If you're willing to go with the disposable G2 barrel, it's significantly cheaper than the Kakuno on a per-pen basis. The hidden cost here is the learning curve and frustration—the Kakuno requires a bit more care, which can lead to lost caps, bent nibs, or general annoyance. That's a real cost.
Dimension 3: Durability & Office Logistics
This is where the Kakuno starts to look like a bad idea for most offices. It's a fountain pen. It's not made to be thrown in a bag or dropped on the floor. The nib is exposed when the cap is off. If a team member loses the cap, the pen is useless.
The G2 is a tank. It survives being dropped, tossed in a drawer, left in a car on a hot day. It’s a tool. You don't worry about it.
I had a situation in June 2024 where our entire team was working on a tight deadline for a client proposal. I had 12 pages of edits to make. I was using a Kakuno. I dropped it. The nib bent slightly, and it started scratching the paper. I had to switch to a G2 in the middle of the document, and the difference in line width was noticeable. Not ideal.
Had 2 hours to decide before the rush order deadline. Normally I'd send the pen for repair, but there was no time. Went with a new G2 based on availability alone.
Conclusion: For open-plan offices, shared desks, or any environment where pens get knocked around, the G2 is the clear winner. The Kakuno is a personal, at-home pen. If you're buying for a department, buy G2s. Save the Kakunos for individual gifts or for your own desk.
Dimension 4: The 'Time Certainty' Factor (My View)
Here’s where I break from the 'always buy cheap' crowd. In a procurement context, I've learned that the cost of failure—especially time-related failure—is almost always higher than the cost of the better tool.
In March 2024, I paid $400 extra for rush delivery on a custom-printed set of G2s with our company logo. The alternative was missing a $15,000 client event. That $400 was the cheapest part of the whole project.
Similarly, if your team has a lot of deadlines—if they're constantly writing, editing, signing—the reliability of a G2 is worth more than the few dollars you'll save on a Kakuno cartridge. The 'probably works' of a fountain pen is the biggest risk. A G2 just works. You don't have to think about it.
I've been burned twice by 'probably on time' promises from cheaper pen suppliers. We now have a policy: for any event or client meeting with a hard deadline, we budget for guaranteed delivery from a known vendor. The G2 is that pen.
Conclusion: If time is a factor, buy the G2. It’s the 'time certainty' option. The Kakuno is for when you have time to enjoy the process.
Final Recommendation: Which One Do You Buy?
Here’s my practical, scene-based advice:
- Buy the G2 if: You're outfitting an entire office, especially for sales, admin, or operations. It’s reliable, durable, and cheap enough to replace.
- Buy the Kakuno if: You're buying for a few specific individuals who love writing, or you're buying as a gift. It’s a fantastic personal tool.
- Consider mix-and-match: Buy a box of G2s for the general supply cabinet. Buy a few Kakunos for the CEO’s office or the creative team. That way, you get the best of both worlds without wasting money on a fountain pen for someone who just wants to jot down a phone number.
(Prices as of January 2025. Verify current pricing at your preferred office supplier as rates may have changed.)