The iPad Pro has a fused digitizer and LCD, like the Air 2. However, I have not seen this screen assembly offered for sale by any of the "traditional" suppliers. You can find it in aliexpress but the price varies pretty widely and I would be suspicious of the lower cost versions.

If you were my customer, I would recommend that you go to the Apple Store. This may be a false assumption, but IMHO if you can afford to buy an iPad Pro 12.9, you can afford to have it properly repaired. A good analogy would be if you buy a high end car, don't go cheap on the brake job.