We help companies grow on Amazon Vendor and Seller by managing the strategic and operational complexity of the channel. Every decision is data-driven, supported by our proprietary software.
Whether your business has an established catalog to optimize or is looking for the right partner to start selling, we turn Amazon into a solid, scalable channel.
For brands already present and market-validated, but stuck on stagnant sales who want to grow volumes, improve ranking and delegate operations.
For established brands that want to assert themselves on Amazon, control their distribution chain and defend their brand image.
For companies that want to scale with campaigns while cutting waste and protecting margins.
For brands that want to grow beyond their home market with localization, pricing and targeted strategy.
We don't just run campaigns and listings. We build a dashboard for each client, always available, with every Amazon metric in one place. You stay in control, we plan the next move.
We keep ad spend and the main cost drivers under control, freeing up resources to reinvest in ranking and the growth of key products.
Each metric is connected to the others, so you actually understand what is happening in your account.
We work alongside you with a structured and transparent process, focused on results and continuous improvement.
See how we workWe analyze sales, ADV, catalog, conversion and performance to find where growth gets stuck.
We define the operational priorities for catalog and campaigns, starting from the highest-impact levers.
We work on listings, content, campaign structure and budget allocation to improve performance and control.
We grow volumes and investment while keeping TACoS, margins and growth sustainability under watch.
We give the client a clear read on results, issues and the next actions.
Real data from accounts we manage, not projections.
Scale sales on a 6,000-variant catalog without destabilizing the Amazon algorithm, accepting a temporarily higher ACoS to gather data.
Catalog of 6,000+ SKUs managed in two phases: ADV push with a temporary 30-50% ACoS, then surgical clean-up back to 20-25% and stable growth.
An invisible technical error was showing users delivery promises of 10+ days instead of the real 2-3, killing trust and conversion.
A formatting bug in shipping tracking caused conversion to drop to 0.81%. Spotted and fixed in two weeks via direct troubleshooting on Amazon.
Defend a fast-growing brand from competitor attacks and scale in hyper-competitive markets while keeping margins under control.
Over 270 active campaigns. Global TACoS 15-17% despite CPCs up to €5 in Germany. Best Seller badge in the IT collagen category.
Account with strong European expansion potential but no ADV structure to manage 5 marketplaces in parallel.
Multichannel B2C/B2B strategy across 5 European markets. 6.8% TACoS, 4.8x ROAS. All-time record: €87,945 in a single month.
Newly launched brand in a category dominated by Amazon Basics, starting from €1,684/month with almost zero organic visibility.
From €1,684 to €40,112. 7.5% TACoS in a category dominated by Amazon Basics.
Flat YoY revenue, ADV budget spread with no per-product priority and unmonitored margins.
From €56,111 to €83,602. 3.75x ROAS with doubled ADV investment and ACoS controlled at 26.7%.
Low organic visibility on primary keywords, ROAS below target and high ADV cost vs. revenue.
"Amazon's Choice" badge on "citric acid". ADV nearly doubled, TACoS below 5% and ROAS above 20.
You've seen the results.
Catalog of 6,000+ SKUs managed in two phases: ADV push with a temporary 30-50% ACoS, then surgical clean-up back to 20-25% and stable growth.
A formatting bug in shipping tracking caused conversion to drop to 0.81%. Spotted and fixed in two weeks via direct troubleshooting on Amazon.
Over 270 active campaigns. Global TACoS 15-17% despite CPCs up to €5 in Germany. Best Seller badge in the IT collagen category.
Multichannel B2C/B2B strategy across 5 European markets. 6.8% TACoS, 4.8x ROAS. All-time record: €87,945 in a single month.
From €1,684 to €40,112. 7.5% TACoS in a category dominated by Amazon Basics.
From €56,111 to €83,602. 3.75x ROAS with doubled ADV investment and ACoS controlled at 26.7%.
"Amazon's Choice" badge on "citric acid". ADV nearly doubled, TACoS below 5% and ROAS above 20.
Amastar was founded in 2021 with a clear goal: helping Italian brands grow sustainably on Amazon and on the main European marketplaces.
We are a team of professionals with mixed skills — account strategists, ADV specialists, SEO experts and content designers — united by a single goal: getting the most out of the Amazon channel for our partner brands.
We focus vertically on Amazon and other marketplaces — we are not generalists.
Every decision is based on real data, not gut feeling.
We work as part of your team, with transparency and shared goals.
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Marketing Idee
Marketing IdeeEverything you need to know about how we work and when an Amazon agency can help you.
Every brand has different goals. Request a call so we can analyze your context and needs.
