Need mechanical advice ASAP for 06 S50.
 

I came across a listing for a 2006 S50 for pretty cheap but it's around two hours away and I don't have any bike buddies down here in Florida yet. The seller said it started making noise so he just parked it. It's only been sitting for two months. I'm certainly no mechanic but this guy sounds like he knows even less than I do, if that's even possible, lol. There are some things I can do with a YouTube video and limited tools but chances are pretty good I'll need to pay a mechanic. I completely understand some things just can't be known until being seen and broken down. But, there's also a chance someone could say they know exactly what it is. Even a few estimates of best /worst case scenarios cost wise would be greatly appreciated. He said there's a tapping noise that is hard to hear in the video. https://youtu.be/c_wN7wKgSDw

Should I gamble or no?