Meh, I totally get that. From what it looks like, the only set I MIGHT get of this year's waves is one of the House banners, and those seem way overpriced. I wish that we'd get more affordable play sets that also look good when displayed! The trunk likely won't deliver - I mean what's there to display, if it looks anything like the magic trunk we know -, and the House banners look none too great either opened or closed. That pretty much leaves the Lake Task, the RoR, and a bunch of even more expensive sets to come.
Also, I've never understood why LEGO Harry Potter, despite being mostly aimed at kids, is so un-affordable TO kids. The cheapest sets currently available are the Polyjuice Potions Mistake and the Thestral Carriage, and both of them are from previous years AND have a list price of EUR 20 each, which is not cheap, period. Star Wars gets all those microfighters, Marvel gets affordable EUR 10 sets with two minifigures (like Shuri's Lab and the upcoming GotG sets) - why can't there be something similar with Harry Potter? Heck, I'd gladly buy a smaller add-on for the modular Hogwarts (a single room on a plate with 8x8 studs) based on, say, the Final Challenge from 2001. Instead, all we get are more and larger sets that I doubt any kid with an allowance and an interest in the theme (say, aged 8 or so) could afford.
I thought the crossover with Dots would change things up a bit. But no. Despite Dots having plenty of affordable sets (all those individual bracelets!), none of the three HP sets were particularly affordable for kids either. I just don't understand this.