The dealership did stand behind their repair (patch) work that was performed before I bought the car...Good surprise; After I had a chance to see what they did, it appears they installed a used tank...Bad surprise. There was no charge for this work in July and the used tank is leakproof thus far.
The cost of a new tank appears to be $1,300 for DIY'ers. I don't know what other parts would be required (fuel pump, gas gauge, gaskets, etc.).
Fullhouz