[Richard]

If you decide to use the permeable pavers, the base will be the key to longevity.

I looked at them when I was building a paver pad here in Florida.

Let me tell you about a redneck technique that I stumbled into for prepping the base. I went through all the compaction techniqes, gravel, and crushed limestone when I first installed the pavers, yet when the coach weight hit the pavers some of them, actually a lot of them, sank. Not too big of a surprise since it is Florida and sand all the way to China.

When I ripped up sections for rework, I simply mixed dry portland cement in with the sand and limestone to make what I nicknamed redneck concrete. After screeding to level, I sprinkled it with water. Those sections haven't moved an inch with the coach driving on them.

The point is that I agree with Paul. You may find that when you add the cost of base preparement to the pavers that you are equivalent or higher than concrete.