"Hundreds of dollars" sounds a bit painful as an EU engineer and entrepreneur :), but I guess it's all relative. We would think twice about investing this much manpower and compute for such an exploratory project even in a commercial setting if it was not directly funded by a client.

But your technical skill is obvious and very impressive.

If you want to read more, my old bachelor's thesis is somewhat related, from when we only had word embeddings and document embeddings were quite experimental still: https://ad-publications.cs.uni-freiburg.de/theses/Bachelor_J...

I've done a lot follow-up work in my startup Scitodate, which includes large-scale graph and embedding analysis, but we haven't published most of it for now.