[Pumic]

Given the Item weighs 280 grams, the DNA or wrong Item received method are both well-suited.

What's the Item?

It's a modded gaming controller that I'll likely resell

Although you'll use the DNA method, given the nature and (low) cost of the Item, It's less likely that an Investigation will be opened.

I'm not saying that It won't take place, but In comparison to (for example)  a gaming laptop which Is almost a certainty, the chance of your Item being Investigated Is significantly less. Please keep us updated with new developments.

If they do open an investigation I'll claim I found the package hidden somewhere and go through with a legitimate refund on the item.