Design an App Mockup

I'd like a skilled and creative graphic design to propose some very initial designs for the look and feel of the app I'm thinking about. The app is called 'Haggle', which aims to connect prospective buyers of products to skilled negotiators that will haggle the price down. They will be connected by location. The savings on the purchase price will be split between 'prospective buyer' and 'skilled negotiator', so it's a 'win win'. At this stage I just want the look and feel or the app to fuel my creativity. I'd like the following three mock ups: 1) Home screen To be very simple, just the logo, perhaps a log in portal, and a minimalist background 2) Logo Again, very simple (think the airbnb or uber logo). Perhaps a capital H? Perhaps in yellow with a grey background? I'm no artist so I'll leave it up to you. Try to embed some sort of negotiation theme to it (e.g., fedex with their logo) 3) A search screen This is an example of one of the functional pages. This is where the negotiators search by their location to find postings of potential jobs (listed by the 'prospective buyers'.). The negotiators can select the distance they'd be willing to search (e.g. tinder). This is all, I'm currently working on and thinking about the functionality so just want some initial mock ups. High quality work could lead to work on the design of the whole app at a later stage.