The lower of the 2 maps shows where the market used to be. I visited many times. The border was not a full border as it now is, and whilst a Thai had to pay to cross, a farang did not. You could take a motorcy taxi for 10bt down the hill to the local market or for 20 bt a bit further on to visit the local whorehouses. My driver was blissfully unaware that my wife was aboard the motorcy ahead (we were only going to market), and not just wanting to take me to the whorehouses, explained there were 3 different rates. Chinese girls were the most expensive, followed by Cambodians with the cheapest being the Vietnamese. This would have been circa 2002/2003
Getting from the market to the border was itself quite a novelty. There was a sort cart capable of holding 4 people strapped to a man who would effectively pull the cart. Going uphill was a slow process and a number of boys would push from behind., Going back to the market however was different. No boys required to push. It was a downhill run and the man would run at alarming speeds. What would hapen if he tripped? Fun but dangerous. All for 20 baht. Alas, before the market closed, the cart was abandoned and travel up to the market and back was on the back of motorbike.
One could buy and bring back 1 case of beer from the market inside Cambodia. I recall buying a case of 24 small Leo on each visit for 275baht. At a fraction over 11 baht/bottle...aroi mak mak!