1.99% Balance Transfer Offer for 12 months - $75 capped fee

I called my credit card company couple times this week.

First, I spoke with the Customer Rep who offered me 1.99% rate good for 15 months with 3% transfer fee. I thanked the person and hung up.

Second,(after 10 min) spoke to a balance transfer specialist who offered the same but after telling this person am keen on doing a transfer and the 3% fee is a hindrance offered to cap the fee at $300. I thanked the person and hung up.

Third time is a charm. Spoke to another Customer Rep who played the same song but this time around she seemed eager to help me and transferred me to a balance transfer specialist who again played the same song but told him am looking to transfer x$ and can the credit card company offer me anything enticing..after going back and forth I was offered a 1.99% rate good for 12 months with a $75 capped fee.

This will go straight towards the mortgage payment next month and then the exciting part begins with trying to pay off this card in the next 11 months.
This will immediately bring down the balance on the mortgage but all extra payments would go towards the credit card and hence the mortgage balance would slowly decrease.

I believe the $75 fee is worth it since I would be saving much more than that with the mortgage interest am paying right now.