I am not sure what is going on but the min price for my adwords keeps going up... min bid $1.00 for "bar food" which adwords suggested. Im confused please she dsome light. They started at .07 cents. Then .10 now 1.00?
If quality score is low, then Adwords will ask to increase your bid. To have a good quality score, everything has to be connected. Also if CTR is low, that's the reason for increasing bids as well.
Look at you keyword relevance with your Ad text and landing page and try optimize them to get best combination.... Also group similar themed and wording keywords together in a single keyword...
The best thing to do is to focus on writing good ads, because if you raise your CTR, your costs will go down and quality score will go up.