Are you looking for any samples or more so organic? Pretty sure you'd have quicker results using Google...but here are a few more.
http://www.hb-101usa.com/ask-for-a-sample/
https://www.microbelifehydro.com/products/hydroponics/natural-and-organic/sample-kit/
http://emeraldtriangle.biz/product-samples
As a new member I want to welcome you to RIU, but please understand that laziness is truly frowned upon within these forums especially by the people who most like have the most knowledge/experience. By no means am I trying to be rude, however I am new grower as well as a new member here at RIU. From my short time on the forum (as a member) it seems those with true experience are much more willing to help those, who try to help themselves first.
For example: the links provided was a matter of about 15 seconds of time, including copy and pasting them here. It has taken more time to write the other part of this post.
Also, one thing very important to keep in mind as a new member here at RIU, just because some one has "earned" the title of "Well-Known Member' doesn't mean that they are by any means a great, knowledgable grower. Yes, some "Well-Known Members" are in fact great cultivators that you can learn a lot from, however I am a prime example of someone who is a new grower, new to the forum, but have earned that status simply because of my activity on the forum.
Again welcome to RIU, and hopefully this comment doesn't come across as too harsh. Take advantage of searches on this site, as well as other site, but never automatically believe something without evidence to back up the claim, i.e. pictures, videos, etc. Welcome to the RIU community and I hope you find lots of great information here and have wonderful success with all of your grows!