Lottery
The lottery enables players to buy tickets in a random game of chance. Players can buy up to 50 tickets for $500 a piece. The lottery draws every 2 hours, and a player who's lucky ticket was randomly selected will win all the money in the pot. The commands available are:

/lottery buy (amount) - No number will buy 1 ticket, otherwise place a number in how many tickets you'd like to buy
/lottery claim - You can claim your won lottery prize with this command
/lottery winners - This will list previous winners of the lottery

Use /lottery in-game for in-depth information about the current ongoing lottery, and /lottery help for a repeat of these commands.

Auctions
Auctions are a way to "auction" off items to the highest bidder. Simply select an item you'd like to auction, and players will bid on the item. You can set the starting bid price, the minimal increment bidders can place, instant buyout, and the amount of an item. The commands available are:

All commands in parenthesis must be typed, while brackets are optional
/auction start (amount of item) (starting price) [increment] [buyout] - This command will start an auction. The amount of the item is how many of the given item you are auctioning, the starting price is what the first bid must start at, the increment is the minimum bidding players must increase the ongoing bid by (defaults to $10), and the buyout is the price that when reached, the player who bid that price will automatically win the auction
/auction info - Provides information on the current auction
/auction bid [amount] - Bids on the current auction. Specifying an amount will increase the current bid by that amount. Not typing an amount will increase the bid by the player-specified increment.
/auction cancel - Cancels the auction, provided that its your own.
/auction ignore - Hides auction messages
/auction spam - Hides only spammy auction messages
/auction queue - Shows the auctions in queue
All /auction can be replaced with /auc. Use /auction in game for a repeat of these commands

Lottery and Auctions are only available in the Survival map