Depending on the bells and whistles, I've seen prices ranging from $7,000 to $20,000.
However, that doesn't only pertain to long-arm machines. When I bought my Bernina 440 QE, I paid $3,000 (on sale) for it and that was without the embroidery unit, which would have cost me an additional $1,000. The car I was driving at the time also cost me $3,000.
Elizabeth