# XmaraI

> XmaraI is an external Amazon department for brands: strategy, unit economics, listings, advertising, logistics and day-to-day Seller Central operations, run as one lane with one point of accountability.

The blog is written by the four XmaraI founders, who run live Amazon P&L every day. Articles cover Amazon strategy, unit economics, PPC, listings and operations across the US, EU, UK, CA, JP and UAE marketplaces.

Site: https://xmarai.com/
Contact: team@xmarai.com
Language of this file: en

## Founders and authors

- [Michael Rosenfeld](https://xmarai.com/blog/author/michael-rosenfeld/): Co-founder · CEO — Active Amazon operator: four private-label brands, 1,000+ product launches, €1M+ in monthly revenue across 16 markets.
- [Roman Korniienko](https://xmarai.com/blog/author/roman-korniienko/): Co-founder · CTO — On Amazon since 2017 — Private Label, Wholesale, and Dropshipping. Keeps the automation layer running: stock, prices, content, and reporting across large catalogs.
- [Olena Zhyhir](https://xmarai.com/blog/author/olena-zhyhir/): Co-founder · COO — Operations, methodology, and governance — the operating system the agency runs on.
- [Anton Protsenko](https://xmarai.com/blog/author/anton-protsenko/): Co-founder · CRO — Eight years in Amazon Private Label (since 2018). Amazon operations expertise — the revenue engine across the accounts we run.

## Articles

- [Hidden Amazon fees on Seller Central: the 2–5% you can claim back](https://xmarai.com/blog/hidden-amazon-fees-reimbursements/): Seller Central has no chargebacks and no Co-Op — those are Vendor Central mechanics. The same 2–5% still disappears, through four channels: inventory Amazon loses or damages, refunds where the customer never sends the item back, wrong measurements inflating every FBA fee, and refund administration fees. All four are claimable.
- [ACoS vs TACoS: which metric tells you Amazon PPC is working](https://xmarai.com/blog/acos-vs-tacos/): ACoS compares ad spend to ad-attributed sales only. TACoS compares the same spend to total sales, organic included. ACoS tells you whether a campaign is efficient; TACoS tells you whether advertising is building a business. Read them together — falling TACoS with steady ACoS is the signal that organic rank is compounding.

## Optional

- [llms-full.txt](https://xmarai.com/llms-full.txt): Every article above, in full.