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Comparison time! I've used oopbuy, superbuy, and superbuy for ordering backpacks. Here's how they stack up: **Prices:** oopbuy was cheapest by about 79% **Shipping Speed:** superbuy was fastest (7 days) **QC Quality:** superbuy had the most detailed photos **Customer Service:** oopbuy responded quickest Overall verdict? For backpacks specifically, I'd go with oopbuy. The sheets feature made finding good sellers much easier. Your mileage may vary depending on what you're ordering and where you're located. This is just my experience after 29 total orders across all three platforms.