Rab Alpine Microlight Mens Down Jacket Beluga Gre

I bought the jacket in July costing me 187.10 Euros. It is a mans XS size in Beluga grey. At the time i thought it would fit me and found out it was too tight after trying it on. As its outside the 30 day returns policy I can't return it to the company and swap it for a small, so I'm selling it for 150 Euros. They are 250 Euros in Cotswold and GreatOutdoors. I have a receipt from company showing proof of purchase.