I haven't had time for lego in a while so I forgot a lot about timelines but I realize that another wave of Harry potter sets came out this year. Does that mean the 2018 sets will be retiring soon do I have another year or so? I really want the great hall 75954 and the hogwart's express 75955. I'd like to hold out as long as possible since I don't have time to build any time soon but I don't want to pay double in the future. Should I be getting them both at 20% off or was the great hall never discounted.

The new gingerbread house 10267, is that available all year round or only around Christmas time?

Also is there any place on r/lego that you can just ask questions without having to make a post each time you want to ask something? Thank you.