Manual V8 Vantage - worth the $15,000 price hike over the "auto"?

I'm seeing quite a few 07-10 V8 Vantages (Sport Shift) popping up for around $30k which seems like a hell of a deal. I prefer the manual variant but the few that I see every so often are hovering around the $45k range.

Just wanted to get some opinions on if the price difference is fair, worth it, or a bit ridiculous. I know this is all subjective but just looking for some insight. I'm in the market and would love a manual but also don't want to only focus on that and pass up on some pretty good Sport Shift deals.