Calf: If you purchase a calf, it can cost from $100 to $500 (although you can pay less or much. much more).  Replacement milk will cost about $50 per bag and you will need about 6 bags.  And a bag of calf starter at $10.  You will also need a show halter (about $10), a show stick (about $10) and a comb (about $10).  You should have access to a blower (OABB has one, or you can purchase for around $300 new).  And you will need a place to keep you calf.

Lamb: Lambs start at around $300 (at auction you may find some less expensive animals).  You can pay much more for a lamb with better conformation from champion stock.  Feeding your lamb from purchase in March to the OC Fair in July will cost about $100.  A halter will cost around $10.  If you want to cover your animal with a "turtle neck sweater", lamb slicks (as they are called) will cost about $10.  To groom you should have a stanchion (about $300) and clippers (about $300), but usually one of the senior members has everything you need so you will not need to purchase these items.  OABB should also have a pair of clippers.  You will also need a place to keep your lamb.

Goats: Goats can be purchased for around $300 directly from the breeder.  But you can find goats for sale for much less or much, much more.  There are a few goat auctions.  Feeding your goat from purchase in March to the OC Fair in July will cost about $100.  A halter will cost around $10.  If you want to cover your animal with a "turtle neck sweater", goat slicks (as they are called) will cost about $10.  To groom you should have a stanchion (about $300) and clippers (about $300), but check with one of the senior members - they may already have everything you need so you will not need to purchase these items.  OABB should also have a pair of clippers.  You will also need a place to keep your goat.