Niv Mizzet, Parun help

Hey all, I’m pretty new to mtg and looking to build a budget deck. Niv Mizzet, Parun’s burn ability is very interesting to me and I would love to build a deck around it. Just wandering if anyone has seen an edh deck for <$50 lately. I have seen some older ones that have since gotten way more expensive. In that same note, most every budget deck I see used tcgplayer priced, but when I look at the actual price with shipping it’s always way more, even using the optimize cart option. Is there a way to actually get the listed price that I am missing?