Samsung Galaxy Book4 Core 5 8GB/256GB/ silver usually 900euros

I have here a Samsung Galaxy Book 4 Core 5 256GB in Silver, with 8GB and 256GB memory and a 15.6" screen. I bought this about a week ago from Harvey Norman as an ex-display model - usual price is 900 euros. It's basically brand new. I'd thought my current laptop was knackered and bought this one - turns out it was fine (long story!) and I only found out after this one had arrived and I'd opened the box. Harvey Norman don't accept returns if the security seal has been broken. Selling at the same price I bought it for. I've turned it on and it works perfectly - no issues with it (same can't be said for my brain in not checking my old laptop properly!). Can be collected from myself in Dublin 16.