Guides, deep-dives, and honest takes on multi-marketplace selling, inventory management, and running a leaner operation.
Profit & Fees
What each order really made, after every fee
10 itemsSelling on Amazon
FBA stock, removals, and running an Amazon store
2 itemsInventory & Multi-Channel
Keeping stock straight across every channel
6 itemsReturns & Fraud
Spotting return abuse before it costs you again
1 itemComparisons
Rilk against the other tools sellers consider
10 itemsUse Cases
Built for how you actually sell
5 itemsFree Tools
Calculators for your Amazon numbers
2 itemsAbout Rilk
Why we built the tool we wanted to use
1 itemA flipper netting $5K/month on six-figure gross does not have a margin problem. His P&L is hiding $3,500/mo in tool subscriptions and unpaid founder labor.
Read articleEstimated per-unit profit is almost never what hits your bank account. Why the gap opens, and what real settlement reconciliation looks like instead.
Read articleOne Amazon order: 23.6% estimated margin, -3.2% after settlement. Two vague "adjustments" were label re-rates. How to catch them on every order.
Read articleYour Amazon deposit is sales minus fees, refunds, reserves and adjustments, over a different window. Every gap, and how to reconcile it line by line.
Read articleReferral fee, fulfillment or label, storage, returns, re-rates, ads and item cost: every cost on one Amazon order, FBA vs FBM, with a worked example.
Read articleProfit per order is one formula on every marketplace. What changes is where fees, label cost and item cost come from, with a worked example on all three.
Read articleTrack each unit at the cost of the purchase order it came in on, landed costs included, and see which batches made money and which sat on the shelf.
Read articleProfit on refurbished stock is per serial number: purchase price, freight, repair parts and labor, grade, fees and returns. A worked example on two phones.
Read articleCarriers re-measure your boxes and Amazon refunds buyers who never send anything back. Both land in your settlement. What to look for, plus a free check.
Read articleA returned Amazon order is a loss, not a zero: the label out, the label back and the fee Amazon keeps. $18 to $24 per return in our example, and how to see it.
Read articleAmazon inventory management done right — FBA stock, IPI score, multi-channel sync, per-unit costs, and the mistakes that quietly eat margin every month.
Read articleMost Amazon sellers lose money by never reconciling FBA removals. Here's the fee math, the trap, and what real tracking looks like.
Read articleFive reasons sellers oversell across channels even with software in place, what one oversell costs, and five questions to ask your tool.
Read articleHow to choose inventory software for selling on Amazon, Walmart and eBay: nine questions to ask, what each answer costs you, and how to test it.
Read articleWe scanned the same UPC into eBay's listing tool and into Rilk. On three popular products eBay found no catalog product; Rilk found each in under 3 seconds.
Read articleWalmart's Buy Shipping API now returns UPS labels, not just FedEx and USPS. What changed, what the label protects, and how to buy them in bulk.
Read articleRilk is listed in the Temu Seller Center App Store and any US Temu seller can connect it. What "connects to Temu" should mean, and what's free.
Read articleThe best multi-channel inventory software for 2027 shows where money leaves after the sale: shipping adjustments, settlements and returns. What to check.
Read articleLooking for a ChannelAdvisor (now Rithum) alternative on a growing seller's budget? Published pricing, free to start, orders, labels, inventory and EDI.
Read moreA Cin7 alternative for marketplace sellers: no cap on channels or yearly orders, no per-user seats, Amazon and Walmart Buy Shipping, per-order profit.
Read moreA Finale Inventory alternative with FBA and Walmart WFS stock kept apart from your warehouse, Back Market on Pro, labels and per-order profit.
Read moreA Fishbowl alternative for Amazon, Walmart and eBay sellers: start free with no demo or implementation package, labels and per-order profit in one login.
Read moreA Linnworks alternative with public prices: free labels and orders, Amazon and Walmart Buy Shipping, serials and per-order profit from the settlement.
Read moreA NetSuite alternative for ecommerce sellers: start free the day you sign up, with orders, labels, inventory, serials and per-order profit in one login.
Read moreA SellerCloud alternative built in 2025 for resellers: free labels and orders, Amazon and Walmart Buy Shipping, per-order profit from the settlement.
Read moreUsing ShipStation but need real inventory? Rilk keeps free labels and Buy Shipping and adds inventory, serials and per-order profit in one login.
Read moreRunning ShipStation and SkuVault side by side? Rilk puts labels, inventory, serials and per-order profit in one login. Free to start.
Read moreA Zentail alternative for resellers: free labels and orders, Amazon and Walmart Buy Shipping, serials, regrading and per-order profit from the settlement.
Read more3PL order and inventory software: each client is its own company with its own Amazon, Walmart, eBay and Shopify connections. One floor picks and ships.
Read moreInventory software for ecommerce sellers on Amazon, eBay and Walmart: one stock pool, FBA prep, labels from the order screen, and true profit per unit.
Read moreImporter inventory management software: overseas POs with deposit and balance terms, container and customs stages, and landed cost split across every SKU.
Read moreMulti-channel brand inventory software: DTC, Amazon, Walmart and wholesale from one catalog and one stock pool, with per-channel profit that actually ties out.
Read moreSoftware for electronics refurbishers: track every phone or laptop by serial or IMEI through grading and repair, and sell on Back Market, eBay and Amazon.
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