Is this a fair deal, and what am I in for?

I've been obsessed with getting a TM 2720SL (or 3124KS) for about a year. Problem has always been price. Even used, these things are generally over $15,000. I've recently stumbled upon a used 2002 TM - model 2720SL. It's just under $10,000 and the owner says it's in good condition, except:

(1) "Center roof seam needs to be caulked. TM needs this every 2 or 3 years. It drips in a VERY heavy downpour."

and (2) "Fridge doesn’t light on propane. It needs an igniter ($30 part). Runs fine on electric which is how we always use it."

Is $10K for a 2002 2720SL a fair price? With the necessary repairs?

How much am I looking at to caulk the roof? And if it's known to drip in a heavy downpour, does that mean there's already possible damage to the frame? Is 2002 before or after they stopped using wood in the frames and switched to aluminum?

How easy is it to do the fridge conversion? I remember reading on here about it, but now I can't find the thread. Anyone have a link?

Anything else I should be worried about?

Thanks,
Rachel