09 vs 07 base

[kriss]

2 boxster bases similarly equipped: 09 ,25k mi,cpo at porsche dealer,$34k

07 , 4600mi, 1 yr cpo(due to prior sale) at porsche dealer $32k

07 obviously has lower miles, maintenance appears to have been done very little car use

09 haven't seen maintenace record yet, 1 owner, (dealer advertises female whatever that means), but would this car be coming up to expensive maintenace-30k service,tires,brakes,etc?

for cars with cpo from dealer is a ppi needed? thanks.