Ordered something off ebay, it comes in amazon packaging. wtf?

Edit: Thanks y'all! Question answered. amazon dropship BS, not uncommon

This might be the first time I've ordered something off ebay. I boycott amazon. I'm pissed that I inadvertently bought something off scamazon. Is this a common or uncommon ebay thing? (collecting info before I leave my angry, 1-star review). TIA!