Just go to ebay, log in and search by sold listings. On March 12th that board sold from a seller with a feedback of 716 with:
INCLUDED :
AMD DUAL CORE ATHLON CPU 5200+
(2) 1 GB PC2-5300 DDR RAM MEMORY
I/O DUST SHIELD
FAN AND HEAT SINK
SATA HDD CABLES
WARRANTED NON DOA 30 DAYS
^ That included and it all sold for $45. Ebay also gets a portion of the sale. It's up to you as to if it's worth it to go to the trouble of listing it. I'd throw it away. It's almost too slow to even use as a basic browsing machine.
Just noticed you have a single core Sempron. That's worse. Cuts any value in half and change my above statement about 'almost being to slow' into 'is too slow' to use for even basic browsing. It won't even decode HD video so no youtube. If you paid me $5 I'd throw it away for you.