Testing the water

Good afternoon everyone after a couple of month's worth of research i finally found the ability to help all the fellow hobbyists and ill most probably get allot of trouble for this

I am able to help everyone by supplying them with any type of aquarium hardware (filters /pumps/heaters/ ect)
They do need at a better rate
I hope this wouldn't make trouble for me

Please note i have no experience in sales .courier or anything else like that but do want to help

What do you guy's think of that ?
Is it a bad idea ?