1. Yes.
2. Taxis come and go there all the time.
3. Not in my opinion but tastes vary. However, if you pay the cover charge into SP and don't commit immediately, you can come back down and have a beer in the red-light bar while you ponder your next move. Once paid into SP, you can come and go as you please. Also, there is a rest area in SP itself where you can have a coffee or soft drink and assess the situation. Some of the girls also hang out there from time to time.
4. Prices are fairly standard; 1000Kc for half-hour and 2000Kc for 1 hour. Some girls have extras but almost all provide "classic sex" (everything covered) for this price.
5. Your chances of being ripped-off are slim as SP is a very well run establishment. Would be interesting to know where you "heard" this???