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In 1858 it had not been invented, so the cost was zero.
About $2.00 at Jewel Osco
30 dollars
Ford Escorts use an inline 4 cylinder overhead cam engine, not a rotary engine.
Unfortunately, the answer to that question is difficult to come by without knowing the location and use of the rotary couplings. The answer could be anywhere from $200-$2000. Please specify use for rotary couplings.
Mechanics in NZ who work on Rotaries are currently on holiday.
Regency 17 jewels
£25 with a single jewel, £30 with a double.
Rotary actuators average around $100 to replace. They are important because they move the read/write head to the proper data track.
The jewel bearings inside a watch are quite expensive only because of the cost of performing the maintenance and repair required to replace them. They are, otherwise, not particularly valuable.
Sorry justin, you are already a woman