I am not with Laminar Research; just a flight simmer.
The only aircraft available from Laminar Research is what is provided with X-plane11.
Any additional aircaft have to be purchased from a 3rd party. Initially start your search through Google for the helicopter you want. I did and came across a site that may have gone broke but are still operating here in Australia. I think they also operate world wide.
You may like to start with www.xplane.org (3rd party and not Laminar linked) who have freeware and payware aircraft available just for X-plane users. They also have a very good forum.
I also googled the helicopter you have a liking for and found a reference in the Xplane.org forum. Comments were not to favourable regarding the seller. Seemed to be a scammer as well
Good luck with your search. As stated above Laminar only provides sufficient aircraft to whet your interest and you have to do your own searching