Where do mods check game's price history?

Though I have heard someone say that if someones region have the game really cheap it might get reduced value

Yes that's what I've read too. I don't know how much the game was retailing for in 2021 but if it was $40+ and it cost $1.22 that would probably qualify.

it could be the price on stores/gray markets was low at that time...

Where do you check price history for gray market prices though?

the price of X country vs USA is very relevant apparently
this is the mods comment regarding Granblue Fantasy Versus(which is now 0CV despite never being free) "This change was based on a deep discount and regional pricing which was used to abuse the CV system. As you highlighted, on 28 April 2023 there was a 90 % discount on Steam. In Turkish Lira, the price was 3.20 TRK which was $0.16 USD, a discount of 99.19% on the USD price used by SG."

to note that price was a 90% discount as the time in Turkey when it happened(base price was 32).

really discourages picking a random well rated 90% discount game, especially with inconsistent criteria regarding CV status(its one thing with the overpriced asset flips... its another with real games)... now I have to go diving into every single regions pricing before I pick a game(beyond just a glance at historic lows and bundle history)... which will at times make me not do it.

edit: ninjad by a mod confirming it does matter while typing this up(im slow!)

The 2019 bundle wasn't really a bundle though. It was a pick 3/4/5 games and get a 80/83/85% discount respectively. That's not high enough to get reduced CV is it?

Regional currency conversions do have an impact on CV calculations abd have been taken into account for a long time.

I've not been a mod long enough to remember when it started, but according to this post by MSKOTOR, it was with Serious Sam sales.

SteamDB currency conversion has NO impact on CV calculations.

Unfortunately it has. If a game is 80-85% (or more) off on Steam it might be put on the reduced CV list because of too cheap regional prices. But only if people from those regions 'exploit' the sale here on SG. For example Down in Bermuda, a game that was never bundled, is zero CV (so not even reduced CV, but outright zero) just because a Turkish user gave away 5 copies during a 90% off sale in 2022 August.

For some time I entertained the thought to spend some of my wallet funds to gift good unbundled games here when they are 80% to 90% off. I even did a few such GAs. But it felt too risky, your CV could be wiped out retroactively later just because somebody from Argentina or Turkey gifted the same game on SG. Maybe it's safer now that the steepest regional discounts seem to be a thing of the past.

I think barter dot vg is the best. It includes giveaway history and bundle.