Season's Greetings, Crossfire Owners.

I am in negotiations to purchase a 2005 Crossfire Convertible Limited, 34K miles, graphite grey color, and one owner. Before making my final decision, while waiting for my funding to arrive from a retirement account, I have a couple of questions about Crossfires.

Maintenance, expensive or no different than any other car? Oil changes, DIY, corner garage, or do they have to be done at a Mercedes dealer?" What about standard maintenance items like brakes and rotors, readily available or hard to find? What about the cost of replacement parts?

Should I be worried about a 21-year-old car's seals and rubber components being dried out? What about the overall durability of Crossfires?

What are the best Pros, and worst Cons of being a Crossfire owner?

Thanks to all who respond.