Most rural bancas offer the numbers games only. The village I stayed in had about 12 lottery bancas and just one sports banca. They are typically 4 foot by 4 foot tin shacks, with little more than a computer and a barstool for the cashier. Lottery-style bancas have a sign out front showing the previous day's drawing. The blue numbers are from one lottery (nacional) and the red numbers are from another (pale).
You can play any number between 0 and 99. It is interesting to note that the numbers are drawn independently, thus it is possible for the same number to be drawn 2 or 3 times in the same lottery. You can play anywhere from 1 to 3 numbers, by default your ticket will be for the 'nacional' lottery unless you specify 'pale'. It is also possible to play numbers from both games on the same ticket. The payouts are high. IIRC, a 3 number parlay pays 12,000 to 1. The maximum bet is 8,000.
The bancas open at 8:30am and close again at 10:00am. This isn't for customers as much as for the collector to make his rounds. He will arrive on a motorcycle carrying a backpack full of money. He carries a gun, as does the bodyguard that rides on the back. The collector withdraws the amount on the closing receipt from the till and in 3 minutes is off to the next banca. The banca then re-opens at 3pm and remains until just before 9pm, when the drawing is televised.
So how much does a banca make? Based on observations of the closing receipts over a 2 week period in march and april, I estimated one particular banca to be making about 800 pesos a day. Not exactly a killing but this particular banca is part of a syndicate of 150 similar bancas. Thus I estimate this particular banca franchise to cash flow like this:
Income: 3.6m (800 a day, 30 days, 150 bancas.)
Salaries:
Cashiers (150): 540,000 (3600*150)
Collectors/bodyguards: 150,000 (this is a guess: 10 collectors at 15k)
Rent: 300,000 (2,000 * 150)
Utilities: 120,000 (800 * 150, assuming they pay it)
Net: 2.49 million pesos per month, minus whatever they have to pay the lottery company. Probably one of the more profitable Dominican enterprises.
Hope this helps.
Chris