Why would keywords with no ads require bids above $1.00
I have a bunch of low competition keywords that are not receiving impressions of my ads. That mostly includes keywords where no ads are being served and worst case they receive 1-3 ads. My ads are highly relevant to the keywords and in other services get CTRs of 1.1% to 1.6%
When I use the tool to test the bid required for first page placement, all but a few require over $1.00 One requires over $3.00! The lowest is $.30.
Given the conversion history, the most I can afford is around $.10 for break even.
Does anyone know why this would happen and hopefully suggest fixes?