The percentages are off. At 45%, I've had more than seven consecutive failures. With any luck, you score points on one out of every four attempts, and you almost never string together more than two or three. The game's difficulty curve is ridiculous because you can't score points.
After +600 attempts, I've found 6 relics. The cheapest upgrade costs 250,000, and given the odds of earning points, it doesn't make sense to keep going—the number of points earned doesn't increase enough to afford upgrades.