This years printing of Aminatou, the Fateshifter took the core cards cards like Future Sight and Oracles Vault and added white and black, so I can do fun things like survive Duskmantle Seer longer than everybody else, get whatever I want out of Druidic Satchel, and break the symmetry of Zurs Weirding (since I dont need to draw cards)
For perspective, the difference between the cheapest Standard deck in the meta and the cheapest Legacy deck in the meta is roughly $2,000
Put another way, for every two copies of Teferi, Who Slows the Sunset, theres three copies of Arlinn, the Packs Hope
People are paying roughly $4.000 for the 30th Anniversary Black Lotus on eBay, so 8.500 Euros might be wishful thinking or maybe someone is trying to get their money back from cracking those booster boxes
If your goal is to minimize negative interactions, swapping them is the right call