Some things to answer before I could give a exact answer.
Is it under Warranty? Extended warranty will usually cover 1 drop, Your location would also be helpful as shipping could make it not worth fixing from repair sources I know.
Tablet Model and year?
Rough estimate based off what I have fixed so far, yes I fix tablets when asked or when I find bricks cheap on Ebay.
Nexus 7 2012 replacement LCD and Digitizer $63 with $25 labor = $88
Nexus 7 2013 replacement LCD and Digitizer $103 with $25 labor =$128
ASUS MeMO Pad ME172V ME172 LCD and Digitizer $35 with $25 labor = $60
All other versions of Asus tablets range from $58 to $128 depending on size.
Prices flux about 15% depending on availability of parts.
Labor rates flux as well, I normally charge $25 but some go as high as $75.