That eBay one is reasonably well specced up. As a 52 reg it will have the Aero "dealer pack". This is almost the same as the "Aero Luxury Pack" for 2004 onwards but without the AS3 Harman Kardon 8 speaker audio.
So... memory driver's seat electric passenger seat, heated rear seat, rain sensing wipers, etc.
My main concern is the long service history with the Now Vauxhall garage. The Now branch at Staples Corner in N. London did some servicing of our company cars. They were dreadful. I heard stories, but only have personal experience from one visit, and I wouldn't go near them again. If it's a franchise, then it's possible that standards are different at different branches, but, I took a colleague to collect his Zafira after a service. They couldn't find the car! It was eventually found parked on a double yellow line a couple of streets away! Fortunately, no ticket. Then the service manager said that the "technician" had gone home, so he didn't know if the service had been done... " But take the car sir, and if you think the service hadn't been done, bring it back and we'll do one free of charge".
While all that was going on, I wandered past a Saab as they had just acquired a Saab dealership, I asked the salesman for some info, and his reply was "Nothing to do with me. Come back on Tuesday when the Saab guy is here".
Not something that inspires confidence.