Design a really cheap MTG format

Heirloom Format

• Inspired by the MTGO budget format Heirloom but with paper price limits
• Minimum deck size: 60 cards
• No more than 4 copies of any card, except basic lands
• Cards can be of any rarity
• The legal card pool rotates a month after each Standard set release based on card price thresholds checked on Scryfall with the following search:

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f:vintage ((rarity:c and eur<=0.1) or (rarity:u and eur<=0.2) or ((rarity:r or rarity:m) and eur<=1)) and tix<=0.05


  

• Common cards under 0.1 EUR/0.05 tix
• Uncommon cards under 0.2 EUR/0.1 tix
• Rare cards under 0.3 EUR/0.2 tix
• Mythic cards under 0.6 EUR/0.5 tix
• Very low barrier to entry with decks costing less than $10, unlike Pauper where some "budget" decks still cost $60+
• If the format was popular enough to influence card prices, rotations would ban the most used cards, preventing the metagame from becoming stagnant
• Lets you play with cards that are bad in other formats but become viable here
• Encourages creativity in deckbuilding with quirky card choices
• Games decided by wits and luck rather than coin

I'm excited to hear your ideas for cheap MTG formats!