Are startups looking for startup marketplace?

I and my friends were wondering to create a platform, for startups, where they can list the services they are providing (including Saas), and services they are seeking.

Few of us have experience of being in startups and the problems which they face. One of the common problem was to seek for services, out of their domain and ended up paying high to corporates for these services. Some of the problem which my fellow friends' startup faced. 1. For It startup, IPR would be a subject out of their domain and vice versa 2. Few designer who just planned to start their own startups to print and sell their designs on merchandisable object. But a) he doesn't have funds to set up its printing unit. b) setup logistics.

We felt creating such a platform would be cool for both the service seekers and providers. Seekers can avail services from other startups - better service, low cost and customised to their needs. While Providers will have chance to be discovered by other startups, who otherwise would not have discovered them and might have ended of paying high to corporates for services.

Before we move ahead, I wanted to be sure that if startups really feel the need of such marketplace? Do others face such problems?