Price of display
How much display cost of apple iPad Pro 12.9 1st generation and fitting charges
See this support page:--> iPad Repair - Official Apple Support
For any further info, please contact Apple Support directly, using this link:--> Get Support , or make an appointment and have your device inspected at an Apple Store or AASP (Apple Authorized Service Provider) among this list:--> Apple – Location Selector
After checking it out, they'll give you all the available options.
Regards
Giulio