WoW: getItem endpoint and .isAuctionable

Hello! So everyone, who is old enough and experienced with Battle.net API (the world of warcraft part of it) remembers that item /data/wow/item/{itemId} endpoint returns a isAuctionable: boolean key:value pair.

As for now, it doesn’t. I notify the devs, (and not just me alone) about it, but it seems that this is not prioritized problem. I understand that it’s only my problem for now, and it seems that I should found a solution before upcoming Shadowlands expansion goes live.

So I am asking the community, where can I found a such data? In which tables at wow.tools and what flag/column I should looking at? Or maybe Erorus, who has a watchful eye over every inch of his newsstand empire can share such information. In which table (of his public part of database) this data can be found in boolean format?

My use case (if someone is interesting in):

With the help of recipe endpoint I could finally evaluate items. The only problem that as for now, I don’t know what item has a market evaluation method. I mean, I should check every item from auction snapshot and mark is as is_auctionable: true. If I have a prepared list with item_ids and isAuctionable, I could easily request auction data for every such item.

Instead of checking every-item-one-by-one…