# Profit Labs > Profit Labs builds modern Shopify apps — Profit Bundles (bundles, gift boxes, and mystery boxes) and Sync Inventory - GoGo (inventory syncing) — used by over 1,000 viral stores. We also publish in-depth ecommerce research — case studies dissecting real Shopify campaigns and the CRO, value-anchoring, and scarcity tactics that make them work — so any store can copy the playbook. These case studies are researched and written by Abhinav Singh, founder of Profit Labs. He spends his days pulling apart winning Shopify campaigns and turning the patterns into playbooks any store can copy. ## Main pages - [Profit Labs home](https://www.profitlabs.shop/): Overview of our Shopify apps for bundles and mystery boxes. - [Pricing](https://www.profitlabs.shop/bundles/pricing/): Plans, free tier, and pricing tiers for Profit Bundles. - [Case studies](https://www.profitlabs.shop/casestudies/): Index of every published ecommerce campaign breakdown. ## Products - [Profit Bundles](https://apps.shopify.com/bundles-5): Shopify app for selling bundles, gift boxes, and mystery boxes with inventory-safe SKU tracking. Free to start. The same app used across the case studies in this index. - [Sync Inventory - GoGo](https://apps.shopify.com/sync-master-gogo): Shopify app that keeps inventory in sync across products that share stock. ## Case studies Append `.md` to any case study URL for a clean markdown version of the article. - [How Sunday Club Sells Nostalgia in a Box: A Breakdown of Their Subscription Campaign](https://www.profitlabs.shop/casestudies/how-sunday-club-sells-nostalgia-in-a-box-a-breakdown-of-their-subscription-campa/): Sunday Club sells a "mystery box" where every item is revealed. They anchor perceived value by detailing contents, then add subtle surprises. - [Anatomy of a Sell-Out: How Sleep Token's 'Arcadia Vault Offering' Redefined Mystery & Scarcity](https://www.profitlabs.shop/casestudies/anatomy-of-a-sell-out-how-sleep-token-s-arcadia-vault-offering-redefined-mystery/): Sleep Token launched 'Arcadia Vault Offering' with 1,000 numbered units, selling out a premium collector's set by framing merch as art, not discount. - [How Swazi Sells Out Mystery Boxes With A Masterclass in Scarcity and Value](https://www.profitlabs.shop/casestudies/how-swazi-sells-out-mystery-boxes-with-a-masterclass-in-scarcity-and-value/): Swazi launched tiered mystery boxes for men, women, and kids, guaranteeing double the value at $300, $150, and $75, selling out fast. - [How Oversized Lifting Club Built an Evergreen Winner with Their 'Mystery Bag' Campaign](https://www.profitlabs.shop/casestudies/how-oversized-lifting-club-built-an-evergreen-winner-with-their-mystery-bag-camp/): Oversized Lifting Club anchored a 999 DKK mystery bag with 5 items, promising 2,445-2,545 DKK in value, then killed purchase anxiety with separate siz - [How PSD Underwear Drives Consistent Sales With Its Evergreen Mystery Box Strategy](https://www.profitlabs.shop/casestudies/how-psd-underwear-drives-consistent-sales-with-its-evergreen-mystery-box-strateg/): PSD made its mystery box an evergreen 'SALE' fixture, not a limited drop. This 10-pack, valued at $260, sells for $99.99, proving scarcity isn't alway - [How DuraPaw Uses an Evergreen 'Mystery Box' to Drive Gifting and Customer Acquisition](https://www.profitlabs.shop/casestudies/how-durapaw-uses-an-evergreen-mystery-box-to-drive-gifting-and-customer-acquisit/): DuraPaw ditched scarcity for an evergreen $65 Mystery Dog Toy Box, making surprise a permanent product. See how they built trust without value anchori - [How Rugby Bricks Scored Big With A High-Value, Limited-Stock Mystery Box](https://www.profitlabs.shop/casestudies/how-rugby-bricks-scored-big-with-a-high-value-limited-stock-mystery-box/): Rugby Bricks revived a 2-year-dormant mystery box, capped it at 100 units, and sold out before Sunday. ## Browse by tactic - [Mystery Boxes](https://www.profitlabs.shop/casestudies/usecase/mystery/): 7 case studies. ## Browse by industry - [Clothing & Fashion](https://www.profitlabs.shop/casestudies/industry/fashion/): 3 case studies. - [Sports & Recreation](https://www.profitlabs.shop/casestudies/industry/sports/): 1 case study. - [Toy & Games](https://www.profitlabs.shop/casestudies/industry/toys/): 2 case studies. - [Other](https://www.profitlabs.shop/casestudies/industry/others/): 1 case study. ## Install - [Profit Labs on the Shopify App Store](https://apps.shopify.com/partners/profit-apps): All Profit Labs apps in one place.