Xfinity NOW is only $30/month for 100/20 Mbps with no data cap. Not sure if it’s available in all Comcast areas though. If you’re an existing customer you have to query a neighbor’s address because they’d rather you not switch.

It would be useful to have an “empty spool database” where people post a photo+weight of their empty spool, plus some fancy way to search by image.

Edit: https://github.com/jtrmal/spoolz looks like a partial solution.