Interesting concept where you pay 25-35Kc (depending on time of day) for every half hour you spend there. To make up for this, the drinks are the cheapest in town. However unless you drink really quickly you end up just spending as much as anywhere else. Worth a visit for half an hour or so but not a place to spend all day.
A bar where you pay wholesale prices, in other words cheap, and for every half hour you are in the bar. There is a big selection of premium alcohol and some other stuff. Bar is nice and clean and staff is ready to help you. Definitely worth trying.
If you are looking for a place to have a couple a shots and move on you are at the right place. Wide range of shots or drinks at a good price. You also pay for time spent so get drunk as fast as possible.