Work completed / marketplace case studies

Work that happened inside the account.

Marketplace launches, account recovery, catalogue transformation, paid growth, reporting infrastructure and owner-operated commerce. This is the work behind Northline — shown as commercial problems, actions taken and outcomes rather than a gallery of screenshots.

250K+Listings implemented on the largest catalogue engagement
41 → 93Amazon IDQ improvement on a long-term catalogue project
6x → 26xeBay advertising efficiency improvement on one optimisation engagement
Launch → handoverChannels built, proven and transferred to internal teams
Case studies

Seven different marketplace problems.

No two engagements prove the same thing. The portfolio spans catalogue scale, eBay launches, account recovery, multi-marketplace infrastructure, Amazon consolidation, international market entry and building a consumer brand with personal capital at risk.

01 / PAINTNUTS

Marketplace catalogue transformation.

Large-scale Amazon and eBay catalogue work across PaintNuts Home and automotive touch-up ranges, including catalogue architecture, SEO, A+ Content, IDQ improvement, compliance work and more than 250,000 listings.

AMAZONEBAYCATALOGUESEOA+ CONTENTCOMPLIANCE
CATALOGUE250,000+

Listings implemented across Home and automotive.

DATA QUALITY41 → 93

Amazon IDQ improvement over the engagement.

PERFORMANCECTR + CVR ↑

Traffic quality and conversion improved materially.

GOVERNANCEAt scale

Trademark hits, violations, suppressions and vehicle-colour complexity.

VIEW PAINTNUTS CASE STUDY→
02 / SALON BARGAINS

eBay channel launch.

A new eBay hair-colour channel built from zero, with catalogue implementation, search optimisation, promoted activity and ongoing commercial management through its first year.

EBAYCHANNEL LAUNCHSEOPROMOTED LISTINGS
LAUNCH0 → live

Channel built from a standing start.

ADVERTISING20x ROAS

Highly efficient paid marketplace activity.

ACOS5%

Low advertising cost relative to attributed sales.

YEAR ONEStrong growth

Meaningful first-year channel revenue established.

VIEW SALON BARGAINS CASE STUDY→
03 / RECYCLE IT CIC

Account recovery and operating repair.

A below-standard eBay account recovered through major inventory cleanup, customer-communication improvements, seller-performance work, restored advertising and a Shopify backend strategy designed to make the wider operation more scalable.

EBAYACCOUNT HEALTHINVENTORYADSSHOPIFY
RECOVERY8 weeks

Return to a healthier operating position.

PENALTY~6% removed

Additional seller-performance charge eliminated after recovery.

ADVERTISINGRestored

Ads became available again once seller performance recovered.

ENGAGEMENTCTR + CVR ↑

Impressions, click-through and conversion improved.

VIEW RECYCLE IT CASE STUDY→
04 / COMPLETE CARE SHOP

Multi-marketplace launch infrastructure.

Amazon, eBay and B&Q launch foundations built in parallel, including product selection, marketplace pricing, fulfilment and returns planning, and a BI dashboard designed to give commercial visibility from day one.

AMAZONEBAYB&QBIPRICING
CHANNELS3

Amazon, eBay and B&Q prepared in parallel.

LAUNCH RANGE20 listings

Controlled initial launch catalogue across products and variations.

REPORTINGBI built

Pricing, margin, ads, returns and profitability logic.

READINESSBefore launch

Reporting and operating processes designed ahead of go-live.

VIEW COMPLETE CARE SHOP CASE STUDY→
05 / GARDEN & HOME TRADING CENTRE

Amazon consolidation and eBay optimisation.

A four-month engagement simplifying a fragmented Amazon setup, solving carrier-routing constraints, improving paid efficiency, growing eBay and rebuilding the Leagrams marketplace presentation.

AMAZONEBAYPPCAPIA+ CONTENT
AMAZON SALES~67% ↑

Approximate daily sales growth following consolidation.

AMAZON ADS15x ROAS

Paid efficiency following the new structure.

EBAY SALES~4x

Approximate daily sales growth over the engagement.

EBAY ADS6x → 26x

Advertising efficiency improved substantially.

VIEW GARDEN & HOME CASE STUDY→
06 / O&M UK

International brand → Amazon UK.

O&M already had the brand, product range, photography, video and content. The work was to assemble the Amazon UK operation: onboarding, account creation, catalogue implementation, commercial modelling, advertising and team handover.

AMAZON UKLAUNCHCATALOGUEPPCTRAINING
MARKET ENTRY0 → live

UK Amazon operation created from launch.

ADVERTISING10x ROAS

Efficient paid activity during the launch phase.

EARLY TRACTIONStrong 90-day start

Meaningful gross sales generated in the first three months.

HANDOVERTeam trained

Internal ownership established after launch.

VIEW O&M UK CASE STUDY→
07 / FEATHER & FUR

Owner-operated marketplace brand.

A natural dog-treat brand built from zero across Amazon, eBay, Shopify and offline selling. Sourcing, branding, catalogue, PPC, fulfilment, SEO, packaging and customer acquisition were handled directly with personal capital at risk.

AMAZONEBAYSHOPIFYPPCBRAND BUILD
CHANNELSOnline + offline

Amazon, eBay, Shopify and physical selling.

ADVERTISING7x ROAS

Overall marketplace return across Amazon and eBay.

TRACTIONFive-figure gross

Real commercial sales generated from a self-funded launch.

DECISIONDeliberate exit

The brand sold; the return on time and capital did not justify further scaling.

VIEW FEATHER & FUR CASE STUDY→
Evidence & confidentiality: public-facing case studies should use approved screenshots, anonymised data or percentage-based performance summaries where commercial figures are sensitive. Explicit monetary values are intentionally omitted from this overview.
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