MacBook Pro 14" (2021) requires entire top case replacement?

Hey there,

my MacBook Pro 14" (2021) got dropped heavily and the screen is broken and it has a visible dent in the bottom right corner of the case.

I brought it to an official Apple Repair Shop and they told me that not just the Display, but as well the Battery needs a replacement. They don't just change the battery but quoted the entire "Top Case with Battery".

As the quote came in at $1.500 it's roughly 50% of what a brand new one costs so I am unsure if it's worth it and might want to try repairing it myself instead.

I saw that on iFixIt there is a guide and part for just replacing the battery as well. is that viable or should I get the same part apple service is quoting, e.G. the entire top case (with battery)?

Thanks,