And the best way to have them all tested, is by purchasing them. Now, Im going to recommend for you to have a taste first of the Ultimate Pheromone Intro Pack. This pack contains basically every bestselling pheromone for men. This pack is precisely prepared to fulfill your primary objective: testing to see if they work. 
In fact you can check on this thread some of the concoctions made by other users, using only the pheromones in this pack, with success!
You can find here one good advice on how to conduct a pheromone test, check the guide on finding your sweetspot.
You want more? 
Check these too and be intrigued : What works: BUSINESS APPLICATIONS (sales, meetings, etc); Pheromones for Pickup: Attraction, Comfort, Seduction (Updated 2014); and What works: CLUBBING/"PROWL" MIXES (eg sex: as in One Night Stands)
Now, you can order whatever mones you will find suitable to your testing spree at the https://a314.com/ Make sure to create an account first in order for you to successfully place an order.
Now, what about the GC? Im sure you’ve read about it. Well, I can’t give you one. Unless you can “tell us a bit about yourself (age, sex and location help a lot) and why you’re here. Include a question or two about anything you want. New users who follow these simple steps will be sent a $25 gift certificate usually within 24 hours. It’s good on any size order at SmartMones.com.”
I’ll be waiting to see if you can do that.
Welcome to PheromoneTalk, Humangus!
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Disclosure: I’ve edited your thread title from “Hello! Just want to try them to see do they really works” to “Hello! Just want to try them to see If they do really works. M/Bosnia-Herzegovina” to reflect where your location is. It’ll also generate more “reads” to your thread. If you want to opt-out simply let me know. Thank you!