Plain-English buying guides for the 2026 reps spreadsheet ecosystem - how shopping agents work, QC and batches explained, shipping line math and the basics every cross-border buyer needs.
What Oopbuy and shopping agents can't ship in 2026 — lithium batteries, power banks, perfume, aerosols, magnets and vapes — why, and how to send borderline items legally by sea.
What Oopbuy QC (quality-check) photos are, where they sit in the order flow, how to request them, and a field-tested checklist for reading them for defects, sizing and authenticity cues before you pay to ship a 2026 spreadsheet haul.
How long Oopbuy takes to ship to Canada, realistic per-kg costs by line, and when you pay duty, 5% GST and provincial tax in 2026 — including the low CAD $20 de minimis and Canada Post delivery.
How long Oopbuy takes to ship to Germany, realistic per-kg costs by line, and exactly when you pay German 19% import VAT and EU customs duty in 2026 — including the €150 duty threshold that ends 1 July 2026 and DHL / Hermes delivery.
How long Oopbuy takes to ship to the UK, realistic per-kg costs by line, and exactly when you pay 20% import VAT and customs duty in 2026 — including the £135 consignment rule (still duty-free in 2026) and Royal Mail / Evri delivery.
How long Oopbuy takes to ship to Poland, realistic per-kg costs by line, and exactly when you pay Polish 23% VAT and EU customs duty in 2026 — including the €150 duty threshold that ends 1 July 2026 and InPost / Poczta Polska delivery.
How cross-border shipping cost is calculated in 2026, realistic $/kg ranges and delivery times by line, plus the new US, EU, UK, Canada and Australia customs rules that decide whether your Oopbuy parcel gets taxed.
Agent shipping air vs sea in 2026: compare speed, cost per kg, weight tiers, customs risk and a worked example to pick the cheapest line.
Reps batches explained for 2026 buyers: what a batch is, how factories make variants, how quality tiers and best batch rankings work, and how to read QC photos.
A 2026 explainer of how shopping agents work: pay the agent, it buys from Taobao/Weidian/1688, warehouses, QC, consolidate, ship, customs.
What is a reps spreadsheet? A 2026 beginner's guide to how finds spreadsheets link agent product pages, their columns, QC, and safe use.