Should I make a move?

[peakpro]

I own an 04 986 base boxster. It has 36,000 miles on it. Options are heated seats, 17 in wheels, alarm, windstopand cruise control. It is carmon red.

My dealer has an CPO 05 987 base boxster with 17000 miles on it. It has heated seats, sound package plus, preferred package and windstop. It is seal gray.

My dealer has someone interested in my car and the have offered me the 05 for my car and what I consider a reasonable amount of cash . (Less than the galves amounts when plugged in for the two cars.)

Thoughts?

How much would you think is reasonable?

thanks

PS...I have driven several "S" versons and with my driving the base is just fine.