Unicyclists and where to buy unicycles in Victoria (Online)

I need advise. Since the start of the lockdown I've been learning how to ride a unicycle. I'm up to the point where I can reasonably do a free mount and ride for a few hundred metres. However the unicycle has seen better days and the wheels are very worn down. I think it's time to retire the old Aldi unicycle and ready to upgrade.

I've been looking online but am unsure of a good unicycle store in Victoria to buy from. I checked ebay and amazon but do not trust the quality of the unicycles they sell.

Also if anyone knows any good unicycle communities in Victoria - I'd like to be a member!

Any advise would be great!!