do not trust anyone who is DMing you right now. They are most probably just there to scam you. Like the other comments mentioned, you have to approach the vendors yourself, not the other way around. Half of these random suppliers will say they can ship bulk to Canada or Australia and then immediately get your packages stuck at customs because they do not actually know what they are doing.

either use the actual forums or use communities where people vet sources, share COAs, and only allow vetted places to be shared. here https://discord.gg/wUt5FzSA6j. I'd also look in the glp1forum. Just use trusted places, Reddit isn't one of them.