3D model phone case to fit other phones

Hello Freelancers! Okay basically i am starting up a business, and i am going to need a lot of 3d modelling done as I have a 3d printer to prototype my ideas. I've got quite a few plans for the next few months, but after Christmas thats when there will be a lot of work to do. What i am looking for is a reliable 3d modeler who can do the work as cheap as possible, due to being a start up i need to keep my costs to a minimum, but if i get the right 3d modeler who i feel i can continue a good business relationship with, there will definitely be a lot better and higher paid opportunities. About this first project: I have 2 simple phone cases, 1 that is plain, and 1 with a simple deisgn, and i require these to fit these phones: Iphone 6 plus iphone 6 iphone 5 iphone 5c iphone 4 samsung s6 edge samsung s6 samsung s5 samsung s4 Note 4 LG G4 Moto g Nexus 6 Sony Xperia z3 compact HTC one m9 All the models need to have a full mesh with no holes, due to them being 3d printed non manifold meshes cause a lot of problems. I can provide the freelancer with a draw up of where everything needs to go, and I have 3d models of the logo and my company name which will go on the side of the case (the name is very simple to put in, its a model of the side of the case so all you have to do is get rid of the wall and replace it with this model), Due to being a startup and keeping my costs low I ideally only want to spend £50 on this first project, if there is any Freelancers up for this challenge, and many more to come, I look forward to hearing from you, and hopefully we can come to an arrangement! Thank you for reading Luke