Chosen Solution

What is the range for the cost to fix a iPad 7th generator

iFixit provides guides and sell parts and tools for you to do your own repairs. iFixit does do repairs. If you need someone to do an iPad repair, rather than do it yourself, I would recommend iPad Rehab. https://www.ipadrehab.com

That very much depends what is wrong with the iPad

Here are the costs for the iPad 7th generation repair