We already reported about UK based Gold Striker International and their 24ct plated iPod and iPhone offerings. The German Golden Store is also offering custom 24ct gold Apple gadgets.
The Golden Store offers the 8GB and 16GB iPod touch plated in gold for 600 (~$889) and 800 Euro (~$1,186) respectively. These prices are quite a bit higher than what Gold Striker is charging (299.95/399.95 GBP (~$616/~$822)).
More details on the Golden Store site.
I'm not sure how long this golden gadget trend will be around, I am already a bit sick of it.