It sounds like you're essentially creating a giant <form> with a spreadsheet/grid layout. Creating such a form and the software to capture the information in a database isn't terribly difficult, but you would need to have some modest experience in programming in a server-side language like PHP and probably JavaScript, as well, for the user interface.
If this is a personal project, it would be a good time to learn these skills so you can get this job done and continue to enhance your website over time. If its a commercial project, it might be best to post an offer on one of the freelancing websites and see what people would charge. You'll need to flesh out the details a bit more, but I would expect the costs to be pretty reasonable based on your post here. Good luck!
Rick Trethewey
Rainbo Design
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