The spread is the difference between the buy and sell price. It's built into the price, so you pay it when you open a trade.
Standard account: from 0.7 pips, no commission
Raw account: from 0.0 pips, plus commission
Example: 1 lot of EUR/USD on the Standard account at 0.7 pips costs 0.7 × $10 = $7.00.
Spreads are variable. They move with the market and can widen at busy or quiet times, such as when markets open or during major news. The figures above are minimums. Live spreads for every instrument are shown in MT5.