Yikes! I now get to read all the leasing horror stories and I am sooooo glad I bought my Volts, BOTH of them. [Now if they had actually given me a REAL fifth seat or 6.6kw charging I might think about upgrading, but the incremental improvements did not add enough value to the Volt]Read the exclusionary language in the EWT contract. Mine= nothing over $500. A shiny Volt wheel with road rash? $558. And you don't get the wheel to keep & and trip over in the garage.
In any case, I looked into new wheels and bought the cheaper ones via my tire dealer for $200 each, as I wanted two spare tires for my Volts. The dollar figure you quote is just so unreasonable as to seem nearly criminal. Sorry for your issues and thank you for taking the time to alert others to your 'lessons learned'. While the write-up doesn't really help me, I hope that my encountered wheel costs help others under a similar situation to just buy new wheels versus getting burned under the format you describe.