Is It Worth Stocking Up on MUJI Stationery in Japan? Comparing 4 Items, the Pen Refill Is Cheaper in Taiwan

Browsing a MUJI store in Japan, it's easy to toss a ¥120 pen and notebook into the basket together. Converted to NT dollars, that's about NT$25 each — genuinely not expensive — but whether to stock up should still come down to what the same item normally sells for in Taiwan. Here, the Japan side uses MUJI's official price; on the Taiwan side, three items use MUJI's official price and the three-color pen uses a momo price, with the retailer listed separately for each.

1. Black 0.3mm Retractable Smooth Gel Ink Pen: ¥120 in Japan, about NT$25; NT$29 in Taiwan — buying in Japan saves NT$4. The Japan source is MUJI's official Japan online store (2026-09-12), and the Taiwan source is MUJI's official Taiwan online store (2026-09-12).
2. A5 Weekly Notebook, 32 Sheets: Japan ¥120, about NT$25; Taiwan NT$28, buying in Japan saves NT$3. Japan source: MUJI Japan official online store (2026-09-12); Taiwan source: MUJI Taiwan official online store (2026-09-12).
3. Erasable 3-Color Ballpoint Pen, 0.5mm: ¥690 in Japan, about NT$143; NT$210 in Taiwan — buying in Japan saves NT$67. The Japan source is MUJI's official Japan online store (2026-09-12), and the Taiwan source is momo (2026-09-12).
4. Orange 0.3mm Smooth Gel Ink Refill: ¥90 in Japan, about NT$19; NT$15 in Taiwan — buying in Taiwan saves NT$4. The Japan source is MUJI's official Japan online store (2026-09-12), and the Taiwan source is MUJI's official Taiwan online store (2026-09-12).

Say you need one erasable 3-color pen, one black gel-ink pen, and one A5 weekly planner: the three items' source list prices total ¥930, about NT$193; the same items in Taiwan total NT$267, a gap of about NT$74. This is a sample budget for buying one of each item, not a store bundle, and it doesn't factor in tax-free.

Whether it's worth bringing back still comes down to whether you'll actually use it. The weekly planner suits people who already keep paper records; if you only need one everyday pen, just buy that one — there's no need to round out to three items just to use up a budget.

For this orange 0.3mm refill, Japan's ¥90 converts to about NT$19, while Taiwan is just NT$15. The gap is small, but it's a reminder: even within the same brand and the same store, each item's price structure differs, so you can't apply one pen's price gap to the whole stationery wall.

This orange refill and the earlier full black pen are different items. This article compares each of them separately against its own matching version in both places, and does not treat different colors, refills, and pen bodies as the same item. When buying a refill, also confirm it fits the pen body you already have.

If the 3-color pen was already on your list, check the Japan price first; the savings on the black gel-ink pen and the weekly planner are small, so if MUJI isn't on your itinerary, just buy them in Taiwan. Refills should be checked individually by your usual color and tip size — no need to stock up on a lot at once.

Before buying, reopen the product page to recheck the price and stock status. This comparison uses the September 12 list prices, which are not guaranteed to still hold on your travel date; if you use paid shipping, the price gap on small stationery items can easily be eaten up by the shipping fee.