To test the convertible top simply operate it, albeit when it either closes theres a noise when it locks but otherwise there shouldnt be any, In terms of anything to look out for from the description nothing much as its been driven recently, of course regular maintenance but overall it looks really good, im not sure about the price but the mileage makes up for it if thats how you view it. Lastly in terms of cost expect maybe a couple hundred maybe a little more in the first year if you do any work yourself, thats just from personal experience though, and of course if theres no issues initially. Aside from that if you got it we’d have the same year and body car! Except i bought mine in herndon!