AdWords average ratio

[Linkster]

The problem with what you are asking is there really is no average click thru ratio - it will differ on every word and every bid - Ive seen some that are 1:1 and some that 1:1500 and people make money with them - it all boils down to what you are willing to spend for a keyword (I know of guys that will spend $30 per hit) and what % of return you want - there are people that make a 5% return on their money - but they move $500k in sales so 5% is a good chunk