I like that you can easily create different price points - it is easy when you use this tool! It makes sense because if someone wants something more expensive then there will be less people who want things at cheap prices as well so overall its good business practice in my opinion.
The UI could definitely look better though but thats just personal preference. If your looking into using an aggregator service or similar i would recommend trying out source point first before signing up with one of these big players (ie Google Adsense) otherwise they are going to take most/all money off what little revenue you do get from adsense etc. As mentioned above creating different pricing tiers gives me peace of mind knowing that everyone gets value without having too many complaints over how much their getting paid per month by advertisers via google adwords.