Interesting link. Pricey at <$700 for a year, or >$1600 for weekly updates.
When I was an active EC, I used a paper 'price book' from a local small supply house.
It was a four column setup, a,b.c & 'retail'. Swapped it for a 'newer' version when they got a 'new' version. Yes, it was 'dated' but served the purpose for me for a long time. Best was the 'price'; "give them my business"
One problem with trying that today around here is there are no more 'local supply houses'