Betting tips can cost anywhere between $10 for 20 credits to $50 for 200 credits. More credits for less is a way to make you spend more and of course you do stand to get extra bonus credit so if you are a regular bettor then that’s a nice proposition. The best advice is that once you start winning and have a favorable balance in your account withdrawal it at the first given opportunity. Do not leave more than your original amount because that way your profits will actually come into your hands.
Bet smartly; do not bet just because you think you can make a profit. This is where professional tipsters come in handy, just by having access to tips by a professional you can be a more informed decision and thus increase your winning chances. Almost all betting tipster sites will allow you to view the tipsters past and current performance and how much their tips have yielded in terms of returns or profits for members.
There are a number of good resources where you can find tips for free but do use them with caution because those tips are not verifiable. This one seems to be an interesting source for soccer betting tips http://www.reddit.com/r/SoccerBetting