When purchasing 3rd party expansion packs

[Depo1964]

This will be the first time that I may purchase an expansion pack for my Genos.

I really like the Rhodes sounds of some of these voices from this Youtube video.
https://www.youtube.com/watch?v=qXMAjvkD7j0
voice 1 at the beginning of the video
voice  @ 0:30
voice  @ 1:14

I couldn't find any answers to my following questions on the PSR website:
Question 1) does a distributor of 3rd party expansion packs need to be licensed or authorized by Yamaha or it is strictly buyer beware?

Question 2) has anyone purchased any expansion packs from this youtube channel before?
https://www.youtube.com/c/EdwardS1/
Looks like he may be from Spain.
He appears to have several for sale as well as other voice and style packs for sale on this channel?

Thx in advance for any replies.
ciao, Dan

[EileenL]

Third party packs are just that. They are nothing to do with Yamaha and are not registered in any way.

[Depo1964]

Third party packs are just that. They are nothing to do with Yamaha and are not registered in any way.

Thx Eileen,
for answering my first question.

Now I'm even more concerned that no one on this forum has purchased from that sight before.
ciao, Dan