Can someone recommend where can I buy new tank/s at good value? I am looking for a 4ft and maybe 6ft.

Found a place selling:

- 4ft (1200x45x50) for $140
- 6ft (1800x450x500) $265
I've always bought used tanks so not sure if these are good prices.

Preferably in Sunshine Coast or with low delivery cost.

Thanks for the tips.