jimbo I tested my previous idea about supplying websites as query parameters.
It seems like in Kagi and in other Google based search engines, there's a limit on the length of search query. You can't therefore list all the relevant retailer domains and expect results. The only search engine that was able to handle my 121 word search query was Yahoo but ranking of the results was so bad that I couldn't still find online stores which sell 2TB microsd cards with shipping to Finland 💁♂️
For those interested, I tried with this query:
microsd +2TB (site:multitronic.fi OR site:data-systems.fi OR site:verkkokauppa.com OR site:jimms.fi OR site:datatronic.fi OR site:tietokonekauppa.fi OR site:proshop.fi OR site:thomannmusic.de OR site:prisma.fi OR site:k-ruoka.fi OR site:maxgaming.fi OR site:mafia.fi OR site:computersalg.fi OR site:gigantti.fi OR site:power.fi OR site:compusat.fi OR site:cruzbroker.fi OR site:tokmanni.fi OR site:cdon.fi OR site:elon.se OR site:webhallen.com OR site:dustinhome.fi OR site:dustin.com OR site:komplett.se OR site:inet.se OR site:clasohlson.com OR site:rajalacamera.fi OR site:fotonordic.fi OR site:kameraliike.fi OR site:fotoman.fi OR site:scandinavianphoto.fi OR site:topshot.fi OR site:caseking.de OR site:amazon.de OR site:amazon.se OR site:computeruniverse.net OR site:geizhals.eu OR site:forgamer.ee OR site:arvutitark.ee OR site:f-musiikki.fi OR site:hifistudio.fi OR site:euronics.fi OR site:telia.fi OR site:elisa.fi OR site:dna.fi OR site:mindfactory.de OR site:elektroshemeikka.com OR site:ldlc.com OR site:materiel.net OR site:alternate.de OR site:mylemon.at OR site:rueducommerce.fr OR site:cdiscount.com OR site:fnac.com OR site:boulanger.com OR site:darty.com OR site:grosbill.com OR site:motonet.fi OR site:hobbyhall.fi OR site:e-ville.com OR site:muistikauppa.fi)
Thinking this feature request further: if the search index was split in regional indexes, implementing a super region properly would involve reindexing all the websites for that super region again. In other words, redoing the most computationally intensive work in running a search engine again. Alternatively it could be done by implementing some algorithm which queries all the regional indexes and re-ranks those with less metadata .. so worse ranking result. Additionally, in such implementation single query would generate single query for every sub index, for example single query to EU super-region would generate request for 27 sub-indexes. With conversion rate of single customer query to 27 system queries, it begins to look like a denial of service attack.
Regardless of the structure of search index, implementing super regions could likely require at least some search index reconsiderations. So it could happen by convincing some existing search engine index manager to modify their index or if Kagi considers super regions as wanted feature when building their own index.
OR I'm totally wrong. This was just pure speculation based on - nothing, really 🙃