Candy Vit, it depends what would You like to know   As our platform will be multi categorized it is really hard to explain in details in one post how it will work   I can tell You in bullet points:
1. All deals will be based on smart contract and will follow interest of both parties. We tried to think through maximum of possible situations and to secure, that deals will be fair and trustworthy.
2. Currency for all the deals will be cryptocurrency
3. Price will be connected to one of exchange markets and will be fixed for the moment when buyer is choosing the product/service and confirming buying
More detailed informed regarding the process You can find from Akaiito WP: akaiito.io