I'd say that until Apple comes out with do-it-yourself parts for iPad, you're likely better off getting Apple to do it.
Click on this link for information about 'iPad Service and Repair' --> iPad Repair & Service - Apple Support
Go to:
How much will it cost?
Use the “Get an Estimate” tool to review potential costs if you get service directly from Apple.
For instructions on how to get your iPhone, iPad, or iPod touch ready for service click here --> Get your iPhone, iPad, or iPod touch ready for service - Apple Support
- "To protect your information and save time, follow these steps before you get service for your device."