treblekicker

Based on the Thalys website, it seems that buying a "mini" round trip ticket is cheaper than buying a one-way ticket. Since I am only travelling one-way from Amsterdam to Paris, I was wondering if it would actually be cheaper to buy a "mini" round trip. If so, could I pass my return ticket on to someone in Paris who might want to travel one-way to Amsterdam for cheap? Or have I misunderstood the pricing on the website completely?
Thanks.