You can bet the maximum bet value as long as the maximum profit value is respected.
Coin : Min Bet / Max Bet / Max Profit
Bitcoin (BTC): 0.00000001 / 10 / 10
Ethereum (ETH): 0.00000010 / 100 / 100
Litecoin (LTC): 0.00000050 / 200 / 200
Bitcoin Cash ABC (BCH): 0.00000001 / 10 / 10 
Bitcoin Cash SV (BSV): 0.00000020 / 25 / 25
Ripple (XRP): 0.00015000 / 10,000 / 10,000
Dogecoin (DOGE): 0.05000000 / 2,500,000 / 2,500,000
Dash (DASH): 0.00000020 / 25 / 25
ZCash (ZEC): 0.00000025 / 50 / 50
Ethereum Classic (ETC): 0.00000500 / 750 / 750
Neo (NEO): 0.00000200 / 125 / 125
Stratis (STRAT): 0.00003000 / 1,500 / 1,500
Komodo (KMD): 0.00004000 / 2,500 / 2,500
Burstcoin (BURST): 0.10000000 / 3,000,000 / 3,000,000
Bitcoin Gold (BTG): 0.00000200 / 125 / 125
Lisk (LSK): 0.00001500 / 750 / 750
Digibyte (DGB): 0.10000000 / 250,000 / 250,000
Quantum (QTUM): 0.00001000 / 450 / 450
Waves (WAVES): 0.00003000 / 1,750 / 1,750
Bistler Coin (BTSLR): 1.00000000 / 1,000,000 / 1,000,000