I've got one of the 4k Samsung TV's. The RVU system still runs over coax, but has an adapter to convert that to ethernet. It's actually just the broadband internet adapter, but instead of putting internet into the DirecTV system, it's running internet (and RVU) out to the tv.
According to Western Union's website, Western Union charges a $5 fee for a standard EFT/ACH delivery and a $22 fee for expedited wire transfer delivery. There is no fee to send a check to the payment recipient.
The problem isnât with Western Union. The problem is whether or not you should be sending the money at all! There are a lot of scammers out there, and they may be able to convince you to send them money through Western Union.