Re: Adwords Can Not Count !
Yes, basically, your CPC is the maximum price you are willing to bid per click, in your case 20p.
Lets say the other bids are 12p, 14p and 16p. That means that you would end up paying 17p a click to be top, as they go 1p over the previous bid. In very simplistic terms, this is how you end up paying funny odd amounts.
However, the adwords bid mechanism is extremely complex, and the bids are always changing. This is because they have things like the ad delivery mechanism, which spreads your ad appearances and positions out during the day to equally distribute your budget. Ad position preference is another factor, as it timed delivery which only shows ads at certain times of the day. Even if you don't use these, other people advertising will be, and this leads to their bid prices constantly changing, which also affect your bid prices.
This means that the prices you pay for your ad's are constantly changing, as the bid prices for other ads and positions fluctuate.
You can make your bid prices and position a bit more stable by turning on accelerated delivery, which doesn't spread your budget out over the day and keeps showing your ads constantly until your budget runs out. This means your ad should appear with every search, but if your budget is too small there could be a couple of hours at the end of the day where your ad isn't shown.
Also note that the costs and impressions data in the back end aren't in real time, and are usually a couple of hours behind. Looking at yesterdays data is fine and will display the true figures, but if you look at them the same day and see you've spent £5, you could of actually spend £8 but the figures aren't up to date yet for example.
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