Augur $REP is based on a decentralized betting platform. This is pretty unique if i may add, especially as the project makes it easy for users to connect their wallets to the platform to perform seamless trades/bets on topics ranging from sports, politics, entertainment, to price predictions. The flexibility of Augur platform makes $REP a solid project to invest in.
Augur is building a decentralized system where users can bet without limits or shady hindrances. Which in a way has $REP with a foot inside decentralized finance. It claims the best odds and lowest fees, but with Ethereums recent high transaction costs, and being based on Ethereum, the later may not be the case for some time.
Also the project has been struggling to fully launch its 'version 2' in my opinion. The v2 which is aimed to bring MakerDAO’s $Dai into the betting platform, Uniswap’s pricing oracles to improve price point accuracy and other tools too.
Anyone can create a market for an event and are encouraged for participating in the project with $REP tokens. Overall the project looks good, with a unique usecase and implementation with blockchain.