I sewed clothes for years and years (about 50), and as long as your machine has a straight stitch, way to make a button hole, and a way to back stitch enough to form a knot, that is all I needed to create my clothes and even a suit for my husband. You must be making fancier clothes that I did.
However, if you can afford the machine and would enjoy it, I would say go for it. It sounds like a very reasonable deal. You might want to sew on it a bit first and see if it is friendly.
See if it has the additional things you need. It is not a very "used" machine, and you already like it. If you want it, go for it! LIke quiltstringz said, you can probably sell it easily if you lose interest in making clothes, purses, etc.
Dina