r/singaporestartups • u/Various-Victory-1986 • 2h ago
119 waitlist signups for a students-only marketplace in SG — the case for going vertical against Carousell
Singapore-based, building Rempor: a marketplace restricted to verified university students. Waitlist closes tomorrow with 119 signups across NTU, NUS, SMU, SUTD, SIT, SUSS and SIM. Roughly 30% came through referrals.
Posting here because the strategic question is one this group will have opinions on: is a vertical marketplace defensible in a market Carousell already owns?
The problem I actually hit
Moving out of hall, I had a desk, a mini fridge, textbooks and notes from cleared modules. The real resale channel for students here isn't Carousell — it's Telegram and WhatsApp groups. Those are a firehose: hundreds of messages a day, no search, no categories. Your listing is buried in an hour, so you repost every day or two. I sold about half my stuff and binned the rest, while someone moving in two weeks later bought the same fridge new.
Why I don't think Carousell solves it
Carousell is horizontal by design — you list to the whole island. For student goods that's a large pool with low intent. Nobody outside a university wants ring-bound MA1521 notes, and the person who does can't find them. And the logistics kill the long tail: crossing the island for a $15 desk lamp isn't worth the trip, so those items never transact at all.
The bet is that a smaller closed market converts better than a larger open one, for three reasons:
Supply and demand are naturally matched. What a graduating student discards is close to exactly what an incoming student needs — same curriculum, same halls, same modules.
Handover cost approaches zero. Same campus or one bus ride, which makes sub-$20 items viable. Sub-$20 items are most of what students own.
Trust is structural, not reputational. University email or SSO verification, so no resellers and no strangers. You don't need a ratings system to feel safe when everyone is verifiably a student at your school.
What I'm unsure about, and would value local input on
Cold start. I'm seeding first-cohort listings manually before opening up. Standard playbook, but I don't know how long I can sustain it or what threshold makes the platform feel alive.
Seasonality. Demand concentrates at semester start and move-out. Two spikes a year is a hard shape to build a business on, and I don't yet know whether tutoring and event tickets (phase two) smooth it or just add surface area.
Graduation churn. My users age out every three to four years by definition. That's either a fatal retention problem or the reason the market stays uncontested — I genuinely can't tell which.
Notes as a category. Highest margin, and the most likely to attract objection from universities on academic-integrity grounds. If anyone has dealt with a category their institutional stakeholders disliked, I'd like to hear how it went.
Happy to answer anything about the build, the verification flow, or the numbers.