How many levels of the Voltorb Minesweeper are there in HG/SS?

Question

I'm doing my cousin John a favor. Anyway, To be more specific, I'm talking about the game in Goldenrod/Celadon City.

Answer 1

8 Levels in total

In each level, a certain amount of coins can be obtained. The higher the level, the more coins that can be obtained. Assuming the player does not quit, the interval is as follows:
Level 1: 20-50 coins
Level 2: 50-100 coins
Level 3: 100-200 coins
Level 4: 200-500 coins
Level 5: 500-1000 coins
Level 6-8: 1000+ coins

Answer 2

8 is the maximum and when you reach 250,000 you win and exits Source

Answer 3

There are 8 levels.

Source:http://bulbapedia.bulbagarden.net/wiki/Voltorb_Flip