Does anyone have a Baby Lock ProLine serger # BL4-428D? I have an opportunity to buy this machine for $100. I want to know how old it is and how well they hold up. My other Baby Lock held up for 25+ years!

Just saw a review on Stitcher's Guild that said that's a good machine, very reliable and sturdy. I would buy it for $100. I saw another posting on a Craigslist for $250 for the same serger.