2006 Hyundai Elantra (70K mi.). What should Motor/Engine mount replacement cost?

What is your question?

2006 Hyundai Elantra with 70,000 mi. (driven 5,000 mi/yr) no highway driving ever. 7 months ago, Mechanic advised motor mount(s) are breaking down & need replacement due to normal wear and tear. Driver has noticed car sometimes 'feels unbalanced' on sharp turns. Been going to this Hyundai dealership for major repairs (e.g. timing belt etc.) or when parts specific for a 2006 are only available there (as well as mechanics who work on Hyundais 90% of the time) for 7 years, trusts mechanic. What should this repair cost on average (parts & labor)?

What makes this problem better or worse?

N/A

How long has your 2007 Hyundai Elantra had this problem?

7 mos. (approx.)