The Brother 1034D is one of the best inexpensive sergers you can buy. I got mine at Walmart online for way less than $150 and it is awesome. It does almost everything most individuals require from a serger with the exception of a coverstitch. That wasn't a big deal for me - as if I really needed that stitch I could easily duplicate it on my traditional sewing machine with a twin needle setup so no love loss there. I love it and its a well established brand/model with easy to find parts, accessories and very reasonable to repair when it should ever break. I highly recommend it if you are looking for a very reasonable solution that should do everything you could want. Check out the videos on Youtube for this model (rather the instructional videos) and you can see exactly how it works and how its setup to get a feel for it. I hope this helps!
Explosive blessings, abundance and inspiration to you all!
- The Creative Seamstress