This Gerni model retails for $499 at other sellers, e.g. Supercheap Auto.
It was a slightly better deal last night with the 10% off code, but unfortunately that has expired. Still a very good price.
Please note that at the time of posting the eBay listing unfortunately reads "Limited quantity available" and "More than 86% sold".
Gerni send different models to different distributors which can make the models a bit difficult to compare.
This would seem, though, to comfortably be a better model than the Classic 130.3PC which goes for $299 at Bunnings, to be slightly better than the Super 130.3 at $399 (due to the integrated hose reel - very helpful for home users in my opinion), although not suite as good as the Super 150.3 at $499 (motor not as powerful).
One thing I would note is that this model comes with a 9m rubber hose unlike the Super 130.3 from Bunnings, which comes with a 6m "Steelflex" hose. Replacement hoses can easily/cheaply be bought as a replacement part, though, if you need one.
Gerni product page is here: https://www.gerni.com.au/en/products/Pages/product.aspx?fid=…
Would this one be any good for cleaning tile grout?