Shopping agents are not interchangeable. Fee structures, warehouse handling, QC queues and shipping lines differ enough that the right choice depends on what you buy and where it ships. This comparison covers the seventeen agents buyers ask about most, with a reference link for each.

How we compared them

Each agent was scored on four things: total fees on a typical $100 order, free storage window, QC turnaround, and how disputes get resolved. Links go to the per-agent reference pages:

What the comparison shows

No agent wins every category. Some price international shipping aggressively but charge for storage after 30 days; others bundle storage free for 90 days but price QC re-shoots separately. Match the agent to your buying pattern instead of chasing the headline fee.