I use adwords maximum 1 or 2 month per year. Thats enough, as in Berlin-Brandenburg (Germany) keyword competition is high. The click Price budget for a request is here between 150 and 250 € in my case. Too high. Could be optimized of course, but agencies will charge hundreds of Euros extra per month. Last booking costed me 150 €, then i quitted adwords again after 2 weeks :) Thats ok, but for me SEO and recommendations work much better.