Basic pricing info: most new stock materials, counter width, will cost a client about $65 sq. ft. depending on size and color. This cost includes design consultation, fabrication and finishing ready for field installation by a contractor, cabinet maker, carpenter or plumber (sink). Soapstone will typically cost a fabricator at least $30 sq. ft. just to buy a slab at the stock yard. Then of course it must be transported, cut, finished. Because of the soft nature of the stone there is excessive risk of breakage/loss/waste of stock due to an unusable or unstable vein and much more care must be taken than that of granite, marble, quartz, etc. Here is a 2-year old forum on pricing: Forum on pricing
More good info: Why soapstone?
Sink restoration: ranges from $300-400 depending on size, modifications and drain re-sizing etc. This is my favorite thing to do!
Sink fabrication: generally a $400 fabrication/design fee plus cost of materials ($65 sq ft for new stock). Additional modifications and features may cost more. A 30 X 19 X 9 1/4 (8 inches deep) will cost about $800 depending on materials.