Angry customers are counting the financial cost of an outage at web services provider Webcity that has lasted more than 24 hours, with no estimate of resumption time of services being offered by the company.

Online store operator Mike Watson of Classic Boat Supplies has been unable to use his website and email service during the outage, costing him in the thousands, he told Fairfax.

Online shop owner Mike Watson has lost thousands of dollars due to the outage.

"The main issue is that there was no communication for a large number of hours. We have no idea whether the fix is two hours or two days away."

"We're definitely moving [service providers]. We just can't afford this for an online business."