Wire transfer is the slowest and most complicated way to transfer the money to or from an online bookmaker, but is still widely used as a reserve payment method.
It never fails and all bookmakers accept wire transfers. They’re useful when you want to fund your account for the first time or when you need to withdraw money after depositing with an option that doesn’t allow withdrawals, e.g. Paysafecard.
Wire transfers are generally slow, and it’s difficult to transfer the money to a faster and more flexible payment option. Therefore, wire transfers should only be used when the goal is to transfer the money to a different payment option.
Wire transfers should never be used if another option is available, but are invaluable as a reserve payment method. For example, if you’re using Skrill or Neteller you may want to fund your account with a wire transfer in order to be able to use the full flexibility of an online wallet afterwards.