Question 1

What is online arbitrage?

Accepted Answer

Online arbitrage (OA) is buying products from online retailers at a lower price and reselling them on platforms like Amazon or eBay for a profit. It differs from retail arbitrage by sourcing inventory online rather than from physical stores. Common sources include clearance sections, daily deals, and wholesale websites.

Question 2

How do prep center fees affect my OA profits?

Accepted Answer

Prep center fees typically range from $1-5 per item and cover receiving, inspecting, labeling, and shipping your products to Amazon FBA warehouses. These fees reduce your profit margin but save time and can be worth it for high-volume sellers. Always include prep fees in your profit calculations to avoid surprises.

Question 3

What is a good profit margin for online arbitrage?

Accepted Answer

A good profit margin for online arbitrage is typically 30-50% after all fees. Some sellers accept 20-25% margins on fast-moving inventory. Calculate total costs including product price, shipping, prep fees, and platform fees. ROI (return on investment) of 50-100% is considered healthy for OA.

Question 4

Should I sell my OA products on Amazon or eBay?

Accepted Answer

Amazon FBA offers Prime eligibility and higher conversion rates but charges more fees (referral + fulfillment + storage). eBay has lower fees but requires more hands-on work if not using FBM. Many OA sellers use both platforms, choosing based on product category, competition, and fee structures for each item.

Question 5

How do I calculate my total cost of goods for OA?

Accepted Answer

Total COGS for online arbitrage = Product Purchase Price + Shipping to You + Prep Center Fees + Shipping to FBA/Buyer. Also consider sales tax (if applicable), credit card cashback (reduces cost), and return/damage rates. Use this calculator to track all costs and ensure profitable sourcing decisions.

Question 6

What are common mistakes in OA profit calculations?

Accepted Answer

Common mistakes include: 1) Forgetting prep center fees, 2) Not accounting for inbound shipping costs, 3) Ignoring storage fees for slow movers, 4) Underestimating Amazon referral fees by category, 5) Not factoring in returns/damaged inventory, and 6) Forgetting credit card fees or sales tax. Always calculate total landed cost.

Question 7

How can I improve my online arbitrage ROI?

Accepted Answer

Improve OA ROI by: 1) Using cashback credit cards (2-5% back), 2) Negotiating prep center rates for volume, 3) Optimizing packaging to reduce FBA fees, 4) Sourcing from liquidation/wholesale for better margins, 5) Avoiding long-term storage fees, and 6) Testing multiple platforms to find the best profit margins per product.

Question 8

How does this calculator save my data?

Accepted Answer

Your inputs are automatically saved to your browser local storage using the key "calcmatic-online-arbitrage". When you return, your previous values are restored. No data is sent to our servers - everything stays private on your device. Click "Reset Saved Data" to clear and start fresh.

Online Arbitrage Calculator

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