Korean Convenience Store Guide: GS25, CU & 7-Eleven
My first week in Haeundae, I lived almost entirely on triangle gimbap and canned coffee from the GS25 below my apartment. Not because I was trying to eat cheap. I genuinely didn’t know what I was doing yet — the store was open, bright, and didn’t require me to speak Korean to anyone. Three years later, I still stop in nearly every day. The difference is I actually know what I’m doing now.
This is the guide I needed in week one.
What’s Actually Worth Eating
Korean convenience store food is not a compromise — some of it is genuinely good. Here’s what I actually buy:
삼각김밥 (samgak gimbap) — triangle rice balls wrapped in seaweed with a filling inside. Tuna mayo, kimchi, spam, bulgogi. They run around ₩1,200–₩1,800 each as of late 2025. Opening them is a three-step process numbered 1, 2, 3 on the plastic wrapper — pull tab 1, then 2, then 3 to release the seaweed from the rice. Just yank it open and you’ll end up with seaweed and rice as separate entities. Which defeats the whole point.
도시락 (dosirak) — pre-packed lunch boxes with rice, protein, and side dishes. GS25 tends to have better ones in my experience. Prices were running ₩3,500–₩6,000 last I checked, though these shift — worth a quick glance at the label. There’s a microwave near the counter; you can ask “데워드릴까요?” (deweo deurilkkayo? = shall I heat it up?) or just point at the microwave and nod. Staff will usually offer before you even ask.
컵라면 (cup ramyeon) — cup noodles. Every store has a hot water dispenser called an 온수기 (onsuki), usually near the back wall or beside the eating area. Fill the cup to the line marked inside, wait three minutes, eat. Shin Ramyeon is the obvious classic. Costs around ₩1,300–₩1,700.
핫바 (hotbar) — fried snacks on sticks kept warm in a rotating case near the register. Fish cake, sausage, cheese-stuffed chicken. Usually ₩1,000–₩2,000 each. Point and hold up fingers for how many you want — no Korean needed.
For coffee, the in-store machines (a touchscreen with cup size options near the counter) make decent Americanos for around ₩1,500. Much cheaper than a café. And honestly, better than you’d expect at that price.
Services That Actually Exist at 3am
This is where these stores genuinely change how you operate day to day. Things you can do that have nothing to do with food:
- Cash withdrawal — Most GS25 and 7-Eleven locations have a Global ATM that accepts foreign Visa and Mastercard. Look for the machine labeled “Global” or displaying foreign card logos. The withdrawal limit is typically ₩700,000 per transaction. CU ATMs are less consistent with foreign card support, so I default to GS25 or 7-Eleven for this. If you’re still sorting out how cash and cards work in Korea, this guide to paying in Korea covers the full picture.
- T-money top-up — Bring your transit card to the counter and say “충전” (chungjeon = charge) while holding it out with the cash you want to add. One word, one gesture — it works every time. More detail on using the card for Busan’s subway system is here.
- Document printing — Most stores have a 복합기 (bokhabgi), a multifunction printer near the back. You can print from a USB stick or via Naver MyBox if you have the app set up. The interface is Korean-only, so USB is the simpler route for most visitors. Around ₩100–₩200 per page as of late 2025.
- 택배 (taekbae) pickup — If you order from Coupang or other Korean shopping platforms, you can have packages sent to a convenience store for pickup. CU has the most developed locker system. You’ll get a code by text message when your package arrives.
Using the Self-Checkout Kiosk Without a Korean Phone Number
Most GS25 and CU stores now have self-checkout kiosks. Faster once you know how they work — but the first time is a bit disorienting, even with an English option available.
Scan your items using the barcode reader on the kiosk, then tap the button to move to payment. Two things will come up that might trip you up:
- 포인트 카드 (pointeu kadeu) — the loyalty points card prompt. If you don’t have a GS25 or CU membership, tap “없음” (eobteum = I don’t have one) or the skip button. You don’t need one to buy anything.
- Age verification for alcohol — if you’re buying beer or soju, the screen asks you to confirm you’re 19 or older (Korea uses the Korean age system, but the legal drinking age works out to 19 internationally too). Tap the confirmation button. It does not ask for a Korean ID or phone number — it’s just a tap to acknowledge.
Some kiosks have an English language option — look for a flag icon or “ENG” button at the top of the screen before you start scanning. Not every store has it, but it’s becoming more common at busier locations.
Payment works like anywhere else: tap your card or phone on the terminal. Foreign cards and Apple Pay or Google Pay work on most kiosks.
GS25, CU, or 7-Eleven — Does It Actually Matter?
More similar than different, day to day. But there are real distinctions worth knowing before you default to whichever is closest.
GS25 is my default. The food quality is the most consistent — better dosirak selection, fresher sandwiches, and the Global ATMs almost always work with foreign cards. Larger GS25 locations also have “마이 컵밥” (my cupbap) — a kiosk where you build a rice bowl by choosing toppings on a screen. Worth trying at least once if you see it.
CU runs the most collaborations — K-drama tie-ins, K-pop branded packaging, limited-edition snacks. If you’re into that, CU is where it shows up. Their bread section is reliably good, and the 택배 locker system is more developed at CU than at the other two chains.
7-Eleven has the smallest footprint in Busan — and honestly, it shows. The product range is noticeably narrower, the food options are less interesting, and the overall experience feels a step behind the other two. I go there when nothing else is nearby, but it’s rarely a first choice. Their ATMs are solid for foreign card withdrawals, which counts for something.
A Few Things I Wish Someone Had Told Me
- The eating area is for everyone — Many stores have a small table and chairs inside or just outside the entrance. Sit as long as you like. Nobody will rush you out. I’ve eaten full dosirak meals outside a GS25 at midnight watching people walk by on their way home from the bars near Haeridan-gil.
- 1+1 and 2+1 deals rotate weekly — Shelf signs that say “1+1” mean buy one, get one free. “2+1” means buy two, get one free. These are usually on drinks, snacks, and ice cream. Worth scanning the shelves before you grab the first thing you see.
- Trash goes in the bins by the entrance — There are separate slots for general waste and for bottles and cans. If you bought something in the store and the bins are full or confusing, staff will usually take it from you behind the counter without a fuss.
- The person at the register may not speak English — and that’s fine — Hold something up and look confused, and they’ll point, mime, or pull up a photo on their phone. This has worked for me with the printer, the ATM, and once with a microwaveable product I genuinely couldn’t identify. Confusion is a universal language.
- App discounts are real — GS25 and CU both have apps with rotating coupons and member deals. They work with foreign phone numbers during sign-up. If you’re in Busan for more than a week, it’s worth setting up. This list of useful apps for Korea includes both, along with everything else worth downloading before you arrive.
One thing that took me longer than I’d like to admit to appreciate: these stores are genuinely open 24 hours, every day, including every Korean public holiday. On Chuseok, when the markets are closed and restaurants are locked up, the GS25 will be there — fully stocked, someone behind the counter. That’s not nothing when you don’t know the city yet. Prices and specific product ranges do shift over time, so treat the numbers here as a general guide rather than gospel.
Last verified: April 2026 · Sources: Visit Busan, Naver Map
Prices, hours, and details change frequently. Please verify on the official website before visiting.
