Easy to use interface and dashboard allows you to quickly see how different partners are performing. "Goal" options allow you to see positive ROI goals and current progress. The automated payouts to partners based on their performance is super valuable and makes running an affiliate program pretty hands of. If you already have a large affiliate program that is making good revenue, ImpactRadius' monthly cost with no added transaction fee is great for you.
The pricing is pretty high for a product that is basically a glorified js tracker with some automated ACH payments. We hoped and were told during the sales cycle that the marketplace would have plenty of partners that would be a great fit for us. Realistically, the marketplace is filled with foreign "coupon" websites trying to make a buck on pushing your promo code. If you are growing an affiliate program, or looking for new partners, other affiliate program products might be best for you to start. While other programs and services usually have per transaction fees, the monthly cost is usually way lower.
We were trying to find additional strategic partners that worked for our affiliate program. If you are looking for your store and promo codes to be scattered across the internet, this is for you. If you are looking to find meaningful partnerships that might work for your product, ask the sales team for more examples (as you will not be given access to look at the marketplace listings before the dotted line is signed).
We were able to give our existing partners a piece of mind working with us as all payments were automated and accounted for.