You can find information about the sellers simply by signing up as a government buyer. It's open to any government employee and should only take a moment. You'll then be able to access the full seller catalogue.
However, if you're specifically looking for pricing, because the Digital Marketplace itself provides a mechanism for rates to be set for individual briefs, we've removed pre-negotiated rates for services. You can find response and rate information in our monthly insights.
We found that fixed rates constrained competition and buyers are generally getting better rates through the Digital Marketplace than through the pre-negotiated rates we had originally.