It costs double what ddr2 does, not really any way around that.
You know it's time to officially retire the computer when...
it's not that bad
http://www.newegg.com/Product/Produc...82E16820134036
"Kingston ValueRAM 1GB 184-Pin DDR SDRAM DDR 333 (PC 2700) Desktop Memory Model KVR333/1GR - Retail"
$34 a memory module - i guess you don't need 2 of them.
$34/Gb is pretty high, considering DDR3 is ~$20/Gb.
Yes, it is pretty high, but it's because DDR1 is rare and expensive these days. The prices never really dropped like other forms of memory for some reason.