I just bought the entire engine mount. I found that I had a credit at ECS Tuning for $162 (they put my credit on account instead of back on the card I used to buy a defective product) for a return I did in December of 2016. Took them over a year to send me an email to let me know it was there. I feel like I got the motor mount for free!
If you do business with ECS, and you return something, make sure you check where the credit goes. Their policy is not to credit your card back after one year, which is conveniently when I got the email from them letting me know about the credit. Fortunately a motor mount replacement is on the agenda for the next service!