I haven't bought it yet ; there is one that is for sale at $400; is that a good deal?

Bernina 850 Industrial

Really depends on its overall condition, the accessories, has it been professionally serviced before it was listed for sale, and have you actually tested it. (Buyer beware!) If it is not a properly working machine, you may be facing extensive repair costs. If you are unfamiliar with sewing machines, then this is probably not the best machine for you. The similar domestic is the Bernina 830 Record which you can find for nearly the same price (depending on its overall condition, its operating condition, and included accessories).

An industrial machine is a different animal than a domestic machine, ie the industrial is made more for very, very fast sewing, ie high production and for sewing heavy fabrics, ie upholstery, leather, canvas, sails, etc. It probably also has special maintenance requirements other than a domestic machine, ie an oil pan. If you plan to do standard home sewing, the industrial is probably too much machine. However, if you know that you want an industrial machine for its special uses, then $400 could be a reasonable price. To know what the going price is, search sold items on eBay, etc.

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