They list a place at Mt Gravatt and bunnings at Mt Gravatt. I assume these place can order you parts. The power tool repairers can fix the tools but I don't know how you go with warranty.
I just had a poke around that website and downloaded the parts diagrams for my ros and drill. Clear and complete even included rrp for the parts. The reversing switch on my drill has gone so thinking about spending the $17 for a replacement.
I won't buy bosch again though. Loving my hitachi stuff.
Incidentally I THINK this is the vacuum adapter for the bosch blue GEX 125 AC that I have. This is the cheapest source I could find:
https://www.ebay.com.au/itm/Bosch-Ad...1F6e:rk:1:pf:0
The part number is
2600306007. I am chasing bosch australia to confirm. Just in case anyone else has a gex125 and is chasing the part.