You insert your transaction and then click 'ESTIMATE PRICE', then you can pay with your VISA card so you can spend your bitcoin, the irony is unbelievable...
I did it and there was nothing, but now I see
They don't expect that users who know how to calculate fee will use this service. For sure they expect that they will earn on people mistakes. If someone will need realize transaction fast, and it will be important for him, will pay any amount to do this.. Especially for international deals, or between companies.
They are taking advantage of the situation to get the maximum bitcoin of desperate people who want their transactions to be confirmed with the utmost urgency
...but the truth is that ViaBTC is overloaded and people are looking for other possibilities.
The service has become very popular and now there are many people using this service and is overloaded