Ok, there's a few things to consider......
Buying new or used: you get a warranty with a new rifle but, used will be cheaper and may come with a scope.
A springer will generally be less costly but, they do recoil so they take some practice to shoot accurately.
They are more simple and, I think, more fun to use.
A PCP will usually be more expensive, especially when you've added the dive bottle or pump. They are a lot easier to shoot accurately as there is no recoil. Also, there are a lot of multishot rifles available which is always a bonus when hunting.
Then, of course, you ge