Evangelicalism is the religion of the rich

It has struck me lately how much evangelicalism caters primarily to the well to do. As I have worked at this job and dealt with the feeling of rejection of not getting interviews for other jobs, which I know I could do, I have realized that my "pull yourself up by your bootstraps" evangelical worldview doesn't work for alot of people. They haven't grown up in a world where that has been proven by experience, where there parents worked hard and it paid off, where hard working parents lives got progressively better and better materially. It seems like we measure an awful lot by material things too. Dress right, talk right, smell right, right kind of house and car, then we like you. Dress different, talk different, smell bad, live in a crappy house trailer and drive a junker and we keep our eye on you.
Whether you agree or not I see a need for a change. My question is can an expression of faith transcend socio-economic classes? Can an expression of faith speak to several different social classes? Or is each social class a separate culture in need of its own specifically targeted ministry or expression of faith? I used to think that they were separate cultures, but I don't know that Jesus or the apostles treated things in this way.