Create an auction system

I am building an NFT marketplace on Flow and NodeJS, which is based on top of the kitty-items project.

Iā€™m wondering what is the best way or stable resource that I can make use of to integrate bidding systems?

Not many projects have designed auctions or bidding systems in Cadence yet, so there is plenty of opportunity to try new things and be creative! One auction project I am aware of is versus, so I might recommend checking them out if you need some inspiration: GitHub - versus-flow/versus-contracts: Contracts for the project

Make sure you give them credit if you use their code!