We are not having any problem getting Gestetner machines at all. Received 2 DSc 651 and a 675 last week and a couple of 45s last month.
Same with supples.
I did get a call from Polek & Polek, a third party parts vendor warning me that I better stock up on parts from them as the Oracle "appocolypse" was coming we could be stranded.
So far we are not seeing any difference and I get supply and parts shipments every day. Hardly any backouders at all.