Control arm and tie rod replacement
It was fair estimation.
Usually, the control arm is about $100 to $150CAD each piece. The tie rod is about $60 to $100CAD each piece, depending on the brand and quality. If you know how to repair the car yourself, you can buy the cheapest parts, or find best deal on the parts. For the four pieces you might pay $300CAD. Keep in mind, the garage mikes money on you on the parts as well.
So the cost will be 2x$150 + 2x$100 = $500CAD for the parts.
They will charge you one hour labor for each piece to remove and install. It is usually $100 each hour for the labour rate, depending on the garage. If you are lucky, you might find an one-man garage, he may charge you $30 each hour, but you have to find him and trust him.
That will be 4 x $100 = $400CAD for the labour.
Since they changed the wheel positions, a four-wheel alignment has to be conducted. It is usually about $90CAD.
You do the math. yourself. It is about $1000 to $1100.
Sorry, I make you disappointed. Good luck.