Your comic inventory. Synced everywhere.
LongboxSync ingests your ComicBase, CLZ, or HipComic catalog and pushes the right variants, prices, and inventory into Shopify, eBay, and Etsy automatically. Stop maintaining spreadsheets. Stop double-selling key issues.
No credit card required. Cancel anytime.
- ComicBase
- CLZ Comics
- Collectorz
- CSV / CBIX upload
- Shopify
- eBay
- Etsy
- HipComic
Built for comic shops, not generic catalogs
We speak grade, variant cover, key issue, and CGC slab. So your inventory does too.
10+ hours / week back
Beta shops report eliminating Sunday-night reconciliation entirely. LongboxSync pushes the right variants, prices, and inventory automatically.
Multi-marketplace, one source
Shopify, eBay, Etsy, and HipComic all stay aligned to the same source of truth. Sell a CGC slab once and LongboxSync delists it everywhere.
No more double-entry
Your collection already lives in ComicBase, CLZ, or a spreadsheet. LongboxSync ingests it as-is — no migration, no re-tagging.
Everything you'd build yourself, already wired up.
You shouldn't be writing Shopify webhook handlers at 2am. We did the boring infrastructure so you don't.
OAuth setup in under 30 seconds. No pasting access tokens.
A comic sells on Shopify, your eBay listing decrements within seconds.
We hash each item. Only changed listings get pushed — no surprise rate-limit bills.
All marketplace tokens are stored in an envelope-encrypted vault. We can't read them, you can revoke any time.
Comic shops are switching every week.
We're early. Beta merchants are building the product with us — and shipping more inventory because of it.
"I used to spend Sundays reconciling my ComicBase export with Shopify. Now I push a button and walk away."
"We sell on Shopify, eBay, and HipComic. Before LongboxSync we double-sold a $400 key book once a month. Zero since switching."
"The encrypted credential vault is what got us off our home-grown scripts. Now an audit isn't terrifying."
Simple pricing. No surprises.
14-day free trial on every plan. Cancel any time from your dashboard.
Starter
14-day free trial.
- 500 items synced
- 1 source (ComicBase, CLZ, HipComic, CSV)
- 2 destinations (Shopify, eBay, Etsy)
- Manual sync only
- 10 uploads/day · up to 10MB each
Professional
14-day free trial.
- 5,000 items synced
- 3 sources (ComicBase, CLZ, HipComic, CSV)
- 5 destinations (Shopify, eBay, Etsy)
- Automatic scheduled sync
- 50 uploads/day · up to 50MB each
Enterprise
14-day free trial.
- Unlimited items synced
- Unlimited sources (ComicBase, CLZ, HipComic, CSV)
- Unlimited destinations (Shopify, eBay, Etsy)
- Automatic scheduled sync
- Unlimited uploads/day · up to 100MB each
Need more than 50,000 items or custom workflows? Talk to us.
Frequently asked
Do I need to migrate my inventory?+
No. LongboxSync reads from ComicBase, CLZ, HipComic API, or a CSV/CBIX upload — whichever you already use. Your existing tagging stays untouched.
What happens when I cancel?+
Sync stops, your data stays. We retain your sync history for 30 days so you can re-activate without losing context. Credentials are revoked immediately on request.
Will LongboxSync edit my Shopify products?+
Only the variants and inventory you tell it to. Custom Shopify-only fields (theme metafields, custom collections) are preserved untouched.
Is the price per store or per item?+
Per LongboxSync account. The tier caps your active item count and how many sources/destinations you can wire up.
Do you support international marketplaces?+
Today: Shopify (global), eBay (US/UK/AU/CA), Etsy (global). Mercari and AbeBooks are on the 2026 roadmap.
How is this different from generic inventory tools like StockSync?+
We map comic-shop concepts natively — grade, condition, key-issue, variant cover, CGC slab — into Shopify variants. Generic tools force you to flatten that into custom fields.
Get your first sync running in 5 minutes.
14-day trial, no credit card, no migration. If it doesn't save you 10 hours in the first week, we want to know why.