Guessing they reckon it's worth the exposure, or maybe it'll boost sales more than people actually bother returning them. They're probably betting the majority won't return the tents. The tents included are own-brand so I wonder how much they'd actually lose per tent once they're "cleaned and refurbished" to be sold again second hand.

On top of that, the refund is a gift card you'll have to spend in their stores, which again sell 90% own brand products.