Adding Features On iOS APP

I have gone through the details of whatever needs to be done in the project. A rough estimation is about 40 hrs. There are a few questions that need clarification though. 1. How will search work in home page? There are categories in the home page so will it search category wise or the whole data will be traversed? 2. Is admob already implemented or that also needs to be implemented? If yes, then that would add a few more hours. 3. I will be needing the design elements from your end. Also the sandbox account for in-app purchase testing. I have more than 4 years of experience in iOS development in both Objective C and Swift and have worked on in-app purchases in many apps as well. Hopefully, I will be able to deliver what you want.