Development costs are influenced by both the duration of the project and the complexity of the functionality to be implemented. Typical projects take from 6 months and involve the work of 1 front-end and 2 back-end developers. The length of custom Magento development projects starts from one year and requires ongoing performance optimization. Mind that the exact estimate depends on the company you pick for Magento development but expect to spend $50+/per hour for offshore Magento developers at a company like Geomotiv.