J.D.
This depends on the implant type and the dr.
I use Dr. David E. Martin at Medical City. My implants are silicone and nearly indestructible since you can cut them in half and nothing will leak. They are now made more like jello than balloons. I had saline before and the leaked after 11 years. Dr. Martin replaced them this past spring with the new ones. They are totally different! The saline ones were quite a bit harder than these. The silicone ones feel like real boobs.
As for cost.. There is $1000 difference in the cost of the types of implants. The surgery for new implants will cost you upwards of $4K to $5K. They do have financing through Care Credit if you need it. It is cheaper to not use a financing company.
Shoot me a message if you need any more information! :)