Here is a very good website to compare the different rates available for PCtoPhone calls:
Unfortunately you'll see that SkypeOut is no longer competitive...

Myvoipprovider

Not that I defend Skype, but just a small quote from that web site when comparing my most used destination (Skype was 4th in the list) Here is what says under the first:
"Specials: The Ipness pro rates require a minimum Euro 100 package. Smaller prepaid packages are more expensive."
I am using 10 EUR package from Skype almost 6 months, how long I will need to spend a 100...
With Skype regardless of how much credit you buy, the prices are the same.
Not to mention the connectivity behind NAT and so many other things in Skype.
And at the end - it is purely your own decision - nobody forces anyone to use Skype!!! right? :lol: