It all depends on your warehouse capacity and whether or not you have the time to test each item, manage pictures and maintain a database. High value items that take little space are probably the way to go: HDDs, 5.25" FDDs, 3.5" 720KB FDDs, RAM, CPUs, main boards, sound cards with value (
http://www.vintage-computer.com/vcforum/showthread.php?23432-Sound-Cards-For-Sale-Tracker), IO controller cards, ISA/VLB video cards and larger items that will sell (see systems mentioned above). Items that typically have no or very little value:
- Newer VGA & SVGA CRTs (IBM 12" monitors for instance usually sell although packaging and shipping is a disaster).
- Printers (especially older inkjet and laser)
- Clone cases
- Pentium II, III and even early IV at this point (and related AMD models)
- Keyboards
- Mice
- Scanners
Notebooks usually sell better.