I have a Brother LS-2125 that I got at Walmart over 5 years ago for around $90, and it's been working fine since I got it. I haven't done any cleaning or servicing other than blowing fuzzies out of the bobbin holder. xD
It goes through fabrics pretty okay, but has some troubles with thicker stuff, and going over seams. But it hasn't failed me yet on anything I've made.
The only problem I've had is sometimes the upper thread gets caught around the tension wheel, and then I have to re-thread it, but it's not a big problem for me.
-others eventually. >.>