@dsksanthu , we do have the [product|IF123-132-3|part in stock] for this particular model.
I also want to include the [https://www.ifixit.com/Store/Mac/MacBook-Pro-13%22-Function-Keys-Mid-2017|parts page for this model too], just in case you need more than just the replacement keyboard. Additionally, if you don't need to replace the actual keyboard housing, then you could just buy the [product|IF123-121|keys].
We don't have an exact guide for replacing the keyboard, but we do have [guide|133426|this guide] that serves as the starting point for most repairs.
Maybe giving the repair a try yourself will be less expensive than the Apple quote :)