Looks like the Australian one is the winner

Came back and looked at this site more, their address is on Broadway in NYC, but it's one of those "pay $50 a month to say you have an address on Broadway" places, not an actual office where collectors can go to look at/drop off items.  Some other places do it also, so while a red flag, it isn't a deal breaker.

Then read the site a little closer, they give the appearance that they are 3rd party authenticators, (similar to a Spence, PSA/DNA or Beckett), but they aren't - they are just dealers.
They talk about the high industry standards they have and how they "meet other standards", but fail to mention any others they meet. Claim they have a rigorous authentication process and then don't describe any part of the process, they mention the reliable team members who are experts in their field and evaluate each item, but then don't name any of the experts. It's nothing but vague claim after vague claim using circular logic.

I would definitely rate it a giant scam and would trust T's home printed certificate of authenticity more.

I have given USPS 20K-60K a year for probably 20 years, unfortunately I have now had to pivot to UPS. I have zero love for UPS with their random charges beyond quoted prices and zero insurance coverages, but when it is taking USPS 3 weeks+ to deliver tubes 4 hours from me consistently and causing me to refund 10%+ of packages sent due to missing their deliver "guarantee" and the need it now generation of complainers, I can no longer stick with them.  This route/sort facility consolidation they have done the last 6 months has just put a nail in the coffin of most small business using them.

So let me start by saying, I get the stuff in the shape advertised, and that is A+ number one, but as I open these packages I get beyond irritated, have actually ruined stuff unpacking... So here we go   Again, not a real dig on anyone mentioned

#1 Irritation these days.... Emovieposter use of strapping tape! WTF, probably ruined a couple hundred dollars in posters over the years unpacking stuff wrapped with this crap. Painters tape, frog tape is your friend! There is no use for strapping tape in any hobby that has to do with paper, period.

#2 Irritation , haven't had one of these show up for awhile (hint) but Rich trying to get rid of 40 years of packing peanuts in every tube he sends. What exactly are those peanuts in the middle of the tube supposed to be protecting?

#3 Irritation , this is more to do with the print word. Shoving a 4" tube in a 4"x4" box, how TF are you supposed to get these things out? Half the time the end caps are off and the print in flopping in the breeze in the box, I literally have to split the box to get the tube out to begin with.

Kind of kidding guys, posters get here as advertised is the key, the real irritation is the obvious toilet paper tubes, no protection triangle mailers etc...

You read my mind!! I have also a 40x60 framed GOod bad and Ugly ...Need to get the 3 sheet For a Few DOllars more in a few weeks . Not sure if I will get the Australian or US version . I like the "not for kids" logo on the Australian , so might go that route ....Will look great all three together . Sue used to be my local framer , but she moved and now its not that easy to frame these big ones at a reasonable cost . But it will happen soon and post here on the great poster forum ..