For me also it is crazy idea, but the truth is that ViaBTC is overloaded and people are looking for other possibilities.
But using VISA to pay for Bitcoin transactions looks for me like nightmare or joke of village drunkard

If you accelerate a transaction within the first 10 minutes of every hour, it's a very good chance that you can get it.
So it is every full hour.. Thanks for info, I was not sure when they restart this 100 limit.
We need more such option because when it comes to transaction backlog, even ViaBTC refuses transaction acceleration requests sometimes in that period. However, I am also joining the 'it's too expensive' club because why would someone pay this amount to accelerate the transaction if he can include it in the miner fees itself rather than paying it to confirm it.
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.
I see. Almost every web wallet is including appropriate fees with each transaction according to the network load. On a corporate level, this service might prove very beneficial to push the things faster speed. Otherwise, for normal bitcoin users, $5 fees are insane in usual conditions. However, these kind of extra efforts to confirm the transaction are not something that we should be proud of as a bitcoin community.