Here's some interesting statistics on ROI with Coinbooster [note: these stats are assuming you're claiming the faucet 24/7, your results may vary] [also does not take into account the current discounts]:
Level 2 [cost is 1,500,000 satoshi or 0.015 bitcoin] would take (15,957 / 60 / 24) = ~11 days to return a profit. Over the 28 days, you'll receive 3,790,080 satoshi or 0.0379008 bitcoin, for a 252% ROI.
Level 3 [cost is 2,500,000 satoshi or 0.025 bitcoin] would take (17,123 / 60 / 24) = ~12 days to return a profit. Over the 28 days, you'll receive 5,886,720 satoshi or 0.0588672 bitcoin, for a 235% ROI.
Level 4 [cost is 4,500,000 satoshi or 0.045 bitcoin] would take (15,000 / 60 / 24) = ~10 days to return a profit. Over the 28 days you'll receive 12,096,000 satoshi or 0.12096 bitcoin, for a 268% ROI.
Level 5 [cost is 7,500,000 satoshi or 0.075 bitcoin] would take (14,677 / 60 / 24) = ~10 days to return a profit. Over the 28 days you'll receive 20,603,520 satoshi or 0.2060352 bitcoin, for a 274% ROI.
Level 6 [cost is 10,000,000 satoshi or 0.10 bitcoin] would take (14,513 / 60 / 24) = ~10 days to return a profit. Over the 28 days you'll receive 27,780,480 satoshi or 0.2778048 bitcoin, for a 277% ROI.
Level 7 [cost is 15,000,000 satoshi or 0.15 bitcoin] would take (13,501 / 60 / 24) = ~9 days to return a profit. Over the 28 days you'll receive 44,795,520 satoshi or 0.4479552 bitcoin, for a 298% ROI.
Level 8 [cost is 25,000,000 satoshi or 0.25 bitcoin] would take (12,500 / 60 / 24) = ~9 days to return a profit. Over the 28 days you'll receive 80,640,000 satoshi or 0.8064 bitcoin, for a 322% ROI.
Level 9 [cost is 35,000,000 satoshi or 0.35 bitcoin] would take (11,666 / 60 / 24) = ~8 days to return a profit. Over the 28 days you'll receive 120,960,000 satoshi or 1.2096 bitcoin, for a 345% ROI.
Level 10 [cost is 50,000,000 satoshi or 0.5 bitcoin] would take (10,834 / 60 / 24) = ~7.5 days to return a profit. Over the 28 days you'll receive 186,076,800 satoshi or 1.860768 bitcoin, for a 372% ROI.
Level 11 [cost is 75,000,000 satoshi or 0.75 bitcoin] would take (9,518 / 60 / 24) = ~7 days to return a profit. Over the 28 days you'll receive 317,681,280 satoshi or 3.1768128 bitcoin, for a 423% ROI.
Level 12 [cost is 150,000,000 satoshi or 1.5 bitcoin] would take (8,749 / 60 / 24) = ~6 days to return a profit. Over the 28 days you'll receive 691,205,760 satoshi or 6.9120576 bitcoin, for a 460% ROI.
Level 13 [cost is 350,000,000 satoshi or 3.5 bitcoin] would take (7,466 / 60 / 24) = ~5 days to return a profit. Over the 28 days you'll receive 1,890,000,000 satoshi or 18.9 bitcoin, for a 540% ROI.
Stats on time to max claim:
Level 1: Max claim 2,500 satoshi, takes ~1 hour to max claim amount
Level 2: Max claim 50,000 satoshi, takes ~9 hours to max claim amount
Level 3: Max claim 100,000 satoshi, takes ~11 hours to max claim amount
Level 4: Max claim 250,000 satoshi, takes ~14 hours to max claim amount
Level 5: Max claim 400,000 satoshi, takes ~13 hours to max claim amount
Level 6: Max claim 700,000 satoshi, takes ~17 hours to max claim amount
Level 7: Max claim 1,000,000 satoshi, takes ~15 hours to max claim amount
Level 8: Max claim 1,500,000 satoshi, takes ~12.5 hours to max claim amount
Level 9: Max claim 2,500,000 satoshi, takes ~14 hours to max claim amount
Level 10: Max claim 4,000,000 satoshi, takes ~14 hours to max claim amount
Level 11: Max claim 6,500,000 satoshi, takes ~14 hours to max claim amount
Level 12: Max claim 10,000,000 satoshi, takes ~10 hours to max claim amount
Level 13: Max claim 25,000,000 satoshi, takes ~9 hours to max claim amount
