Should I buy Vinland saga deluxe edition

so I started reading Vinland saga recently and I love it so much. I already have the first 4 two in one editions. But I saw that they made the deluxe editions they look really nice. I have heard that they have really cool extras and covers. also I think they Go on discount quite often. But should I buy them or just stick with the originals also mind you I’m not rich so yah thanks