Don't sell fake/custom cards
Sending below the trending price might give you a slight edge, but really is up to you to decide on your pricing strategy
It's potentially pretty unfun, but if your Zur deck isn't often casting multiple spells you should consider Rule of Law/Arcane Laboratory if your opponents won't revolt, Zur already cheats out an enchantment and you can make tokens with mana, how many spells do you really end up casting compared to people playing more traditional decks
Its also disgusting in multiples
Back in 2011, I built Boros Landfall in Standard, which was one of my first proper Standard decks, after being glued to the screen watching Paul Rietzl playing it to a second-place finish at Pro Tour Paris
You often see it in a scam setting where players warp it into play, then flicker it to draw a second card and keep the threat