Wanting to buy need some advice

I've been lookin at some preludes lately, and found a nice 1999 prelude with 63000 miles, i'm not a mechanic so I dont know much, but the first and only thing i noticed was a weird click in the engine.. it didnt sound bad, of course me not knowing, i think maybe its just how the prelude engine is built, everything such as the interior is perfect, the exterior is perfect, what exactly should i watch out for before purchasing a prelude

anyone know?

What kind of gas is the guy using in his car?

Test drive at least 4 Preludes before purchasing one because I drove a 01 prelude with like 50k on it and it drove like shit compared to a 97 prelude with 120k. The 01 prelude looked like it was brand new kinda like wut your describing with this car. Just my advice.

About the clicking not to sure. I kno my friend had an older prelude and his clicked and he said it was natural and it was the fuel pump. Not sure tho