We can safely say for sure that our prices are quite realistic.

We can safely say for sure that our prices are quite realistic. Other suppliers can not possibly under-quote us if their goods are as good as ours in quality.
【正确答案】：可以肯定地说我方的价格是相当合理的,质量与我方产品相同的供货商不可能报出比我方低的价格。