Yeah it takes way too much time to look through to find all of the part URLs, and I don't have confidence that the prices will be accurate, up-to-date, or the lowest.

Especially since I plan to post many builds, I would need it to automatically look up the URL for me if I were to use that feature. The process takes a few minutes already.

The goal is mainly to show people where to buy parts and what parts to buy. The parts section compares URLs from all of the builds to find the most common parts and stores. I do plan to implement a restriction at some point to ensure a build contains at least the core components such as the Frame, FC, ESCs, Motors, Props, etc. before allowing it to be published.

That makes sense, and I understand the want of data to compare prices, however I think you would attract a lot more users posting builds if you made posting the part URL optional. It saves time, and lots of builds use similar parts that users already know where to source.
Just a thought, thanks for the help.

I actually put this site together because people kept asking me where I got my parts. I was always going into my order histories retrieving URLs, so this site saves me time not looking them up anymore.

Ah I gotcha, understood. Definitely dig the site, I'll try and submit URLS