G'day Puffl,
We have just used Stegbar (Jeldwen) to do ours. It was arranged through their Sunshine Coast agency. 6mm toughened, ionised glass (won't crack with heat and doesn't give 'green' tinge to whatever backing colour you choose) was cut in Melbourne and freighted to Hervey Bay.
Approx 3.8m length x 330mm high in total across two pieces, with 3 x GPO cut outs and 900mm riser from gas cooktop to below rangehood about $1360.00??? from memory.
We looked at other options but because it is our PPOR we went with the glass. Had a look at laminates etc. but it looked sh#thouse.
Cheers,
Ian.