Now that I have one, I use it to trim, and bind the edges of the layers, so it is easier to put the binding on, and no tedious cutting the edges off.

Thanks, so much! I didn't think about the quilt binding benefit. That's a cool use for it..... I do make purses and totes and didn't think about that either. Ok...I think I'll get it.

My only experience is changing blades and lube. But I can tell you that I am not impressed with the one I tinkered with. Cutting fabric and having all the debris falling into an areas with lots of moving bits doesn't make any sense.
I don't even know who made it so I can't bad mouth the brand. Maybe newer ones are better.

First reason why its great for quilting, you never run out of thread in a bobbin, there is none. I have done a log cabin fleece quilt with my serger, one that uses long strips of fabric, etc. Sergers are great in both sewing and quilting worlds, plus home deco. I've made table runners and do the decorative stitches on the top. My serger has the wave stitch and I use it when I'm making table cloths or runners, I normally make both sides of the cloths different, like combine Christmas and fall together. well this is great but hard to find binding to match both. I first quilted the cloth, it also has the insulated cloth in it to protect my table, I then serged the edges instead of putting a binding on, which you could sew the binding on and then top stitch by hand or machine. Nancy Zieman has a book out on doing piecing with a serger. Plus there are videos. Check out the internet to see all the ways you can use one. You said the serger was new so it probably has the air threading but the olders ones don't. I love my BL serger, its the Ovation and it makes all of my sewing feel complete when I use it. Plus, I know its not falling apart when I've serged it. Go to Ebay and see what they are selling the one she's offering to you. Start off and offer to pay without giving her a dollar amount and then if she gives you a dollar amount you'll know if its worth it. At least with it being a BL it should be easy to find classes on more techniques to use it for. By the way, there is no oiling, I've had mine several years and have never changed a blade and mine is auto tension, I never change my tension, its always right on