If you live in Melbourne, Streetwise sell good RAM for good prices. And their great with help, etc. ive been going there since i was a youngen, and have had no problems with them.
Slightly on topic, at Streetwise, they have a corner of the shop set out with a computer, a keyboard and some good speakers connected. They usually have an iMac or a Powermac, so out of interest, i walked over to see what they had. The display was black, so i figured it must have been a PowerMac. When i looked, there was no PowerMac! I looked closer, and found this tiny Mac connected to a big display. I've been a user of Macs since birth, and I still cannot believe a computer exists which is so small. Then again, I'm typing this on my 13" dual core MacBook, on my legs 😛
I dont need to tell you to enjoy your Mac Mini. You will anyway 😀