If you deposit at least 0.5BTC(or the equivalent in other altcoins) your first bet is a "safe-bet",this meaning you get 50% back if your first bet loses.Minimum odds are 1.6 for singles or 2.4 for parlays.
0.5
BTC is really a big amount considering that you haven't earned enough trust in this community. If you can lower that requirement than your offers might look more attractive.