Your link didn't work for me, but I just picked up a stick of 512 MB DDR RAM from Circuit City yesterday. On sale for $18 after rebates ($60 retail - $42 rebates). The RAM was Kingston "Value Line" 512 MB 3200.
One thing to keep in mind, it's CL3 only at 3200. It's backwards compatible to slower motherboards.
I have an older motherboard, MSI 6380-v2, which is a 266 mhz DDR board. So, 2100 RAM is the best I'll see, performance wise.
According to PC Wizard 2005:
Manufacturer : Kingston
Part Number : K
Type : DDR-SDRAM PC3200 (200 MHz)
Size : 512 MB (2 rows, 4 banks)
Module Buffered : No
Module Registered : No
Width : 64-bit
Error Correction Capability : No
Max. Burst Length : 8
Refresh : Reduced (.5x)7.8 Âµs, Self Refresh
Voltage : SSTL 2.5v
Supported Frequencies : 133 MHz, 166 MHz, 200 MHz
CAS Latency (tCL) : 2 clocks @133 MHz, 2.5 clocks @166 MHz, 3 clocks @200 MHz
RAS to CAS (tRCD) : 2 clocks @133 MHz, 3 clocks @166 MHz, 3 clocks @200 MHz
RAS Precharge (tRP) : 2 clocks @133 MHz, 3 clocks @166 MHz, 3 clocks @200 MHz
Cycle Time (tRAS) : 6 clocks @133 MHz, 7 clocks @166 MHz, 8 clocks @200 MHz
I've got a total of 1 GB RAM now. When I first installed it, I was getting strange errors in Internet Explorer ( Module faults, etc ) and other programs, which ran fine before. So, I ran MemTest86 v3.2 and ended up with over 27,000 errors!!! ( btw, the errors were mainly in Test #5, which I've read may be caused by the Northbridge overheating ).
I, then, put the new 512 stick in the first slot and put my weakest RAM (some no name generic cheapo ram) in the last slot. Also, I had my AGP Aperture at 256 MB, which was changed to 128 MB, and put other BIOS settings back to default.
So far so good now. I'm running CL 2.5 - 3 - 3 - 6 timings, so not very exciting for those overclockers out there.
Going from 512 MB to 1 GB has been great since getting over the initial problems.
For the price, it's worth a shot. The gal at the Circuit City cash register said I had 30 days to return it. So, hopefully, I won't need to because I've been spoiled with a more responsive computing experience!!