How exactly does the market queue up buy orders?...

[KlopKlopperson]

I assumed it maintained the order of when people placed buy orders, aka the first one to place an order at a certain price would receive it. Recently I placed an order to buy something at $0.04 when all of the other orders were at $0.03. Today I checked on the order and it seems there are a couple of other orders now also placed at $0.04 and one card has been sold at that price. If I was the first one with a listing at that price I'm not sure why someone else's order would go through before mine? Or am I missing something?

[KlopKlopperson]

It's been well over a week since my buy order has been posted and several others have been placed at the same price and subsequently sold since then, including at least one sold at a lower price. Can anyone tell me exactly how they queue up these buy orders?

[tuxdelux]

Largely a mystery. You're not the only one who noticed this odd market behavior. Best explaination that i have seen is that there is currency exchange happening that will make a three cent buy order complete before a four cent buy order. Something to do with rounding errors. Frustrating, but not terrible.
I would like to know about the 100s of buy orders that appear at the same low price. It looks like bots that are trying to jack up the price, but I can't find any discussions here talking about it. Another community market mystery, I suppose.