QUOTE(molitar @ Jan 15 2014, 16:22)

If I was to sell 10 kGP @ 192 credits I would in effect be selling that for a total of 1,920 credits.
Correct.
QUOTE(molitar @ Jan 15 2014, 16:22)

Now if I want to buy immediately and not wait for a counter offer or an accept by them entering in the new amount offered I can just type how many Hath's I want for a sellers asking price.
Seller
19 Hath @ 9,960 Credits
I would just put in say 1 @ 9,960 credits to purchase that many hath's at that asking price.
Correct.
QUOTE(molitar @ Jan 15 2014, 16:22)

If I want to purchase a single Hath it would be the average current rate rate average of 9,906 Credits, but I can offer less and hope a seller accepts it.
So if I wanted to buy a single Hath it will cost me 9,906 credits.
A bit incorrect here. The average rate is just for reference. Let's say the lowest ask price is 9,960. If you want to buy at lower price, you can place a buy order at ... for example 9,950. Then your order will appear on the 'buy side' and wait for the seller to fulfill it. If any seller is willing to sell at 9,950, then you'll get 1 hath and pay 9,950 credits.