The high end market is full of slick suited salesmen with even slicker flash presentations about how they can uplift ROI by xx% for their small fee of 5% to 20% of spend,
At the high end some will even want you to pass the account over to their agency account so they can get the google best practice (contradiction in terms if ever I heard one) funding kickback on topof the 5% to 15% they'll charge you too.
As you are looking to use the tools that agencies do, where expert adwords knowledge isn't such a high priority as the budgets are huge and expectations are small you'll find things are disproportionately expensive.
Personally I think half of them have no clue what's really cooking but then again they usually deal with media agencies or some big brand's in house marketing team who are invariably clueless compared to most good affiliate PPC specialists.
the bigger ones are searchrev, efrontier, esearchvision etc. , and vary from a £0 to £10k set up fee (lots of work.. seeing as it's set up the same day heh

)and 5% to around 20% of ad spend with monthly minimum fees from about £3k
There are other alternatives out there and they all vary in cost, flexibility and effectiveness, it really boils down to how much you want the software to do and how much you wish to do as there's a trade off between automation, control and cost.
the cheaper options are limited in function but can work well on some campaigns where a fixed cpa is defined.