I just checked again. 16GB DDR5 (291 Euro) to 32GB (519 Euro). Seems right to me and does not match what you reported. Maybe they updated the website by the time I checked.
Their price history does not reflect this at all, so I'm not trusting their values one bit.
At best, they changed their complete history to reflect a different product (or basket of products), and while the 16GB-DDR5 category is closer to accurate now, the 32GB is now too high: 32GB of DDR5-6000 can be had for 400ish in the Netherlands (or elsewhere in Europe).