I'm looking to play casually (in person) with some friends and we were wondering what the cheapest format to start buying for would be? And what might be some good pick ups (we have the starter decks but want some more variety) thanks!
Definitely pauper. There are some staples that are expensive, like Snuff Out and Spellstutter Sprite, but you can build plenty of meta decks and brews without them. It's also very fun, I definitely recommend it. Otherwise, you can always try to proxy decks from other more expensive formats like legacy and modern. They are also fun to play imo.
Pauper is great as others have said. Pioneer is awesome too! Nonrotating so you can always play your deck, the staples are not too bad compared to most other formats.
As the name suggests, Pauper is the go-to budget format. Admittedly, it's less cheap than it used to be. But at its cheapest, it is one of the least expensive.
EDH (Commander) has a huge range in price, but some decks (check out The Commander's Quarters on YT) are super fun and affordable. It's a good casual format to start a budget deck with and continue growing. It's also a gateway drug, so be warned 😬
Lastly, if you are playing in a private pod (i.e., not at your LGS), you can set your own limits based on market price. For example, no decks over 50 bucks total, no single high-cost card over 10 bucks, etc. Ultimately, rule zero applies to budget-conscious private games. You decide what's allowed.
I agree with others that pauper is a great format to get into as it can be very price assessable.
However I would like to make an alternative suggestion - JumpStart (or a mini JumpStart Cube if your group is very interested). The biggest benefit to this format is the sheer variety that you can have in games over the course of an evening of playing. It is very easy to pick up and play from a players perspective and can be treated like a board game.
It will require someone doing a small bit of research on what packs you need to buy, or what singles you need if building a custom list.
I think the absolute cheapest would have to be pauper, and depending on what your flg nearby runs you may be able to find games to play with others without too much work.
I don't know if it's the cheapest but I recently got back into magic after 15 years and my friends have been playing eternal brawl.
It plays really well with 3-4 players but works for 2-6. Like commander you have a commander but only 60 cards and all of your cards need to be from a block to avoid bad combos.
It's possible to set up a deck for a few dollars if everyone is avoiding expensive cards and using a few sets old block usually means most cards are a few cents.
I'm back to MTG after a 3 years hiatus and I'm rediscovering the pauper format (this time on #mtgo). Prices are around 50$ for the tier 1 decks and the more expensive part tends to be the sideboard