Hi! There are four (4) S-100 SMB, eight (8) S-100 bus extenders, and two (2) S-100 8088 CPU board PCBs left. Here are the latest descriptions of these boards: http://s100computers.com/My%20System%20Pages/SMB%20Board/S100%20Bus%20SMB.ht m http://s100computers.com/My%20System%20Pages/Extender%20Board/Extender%20Boa rd.htm http://s100computers.com/My%20System%20Pages/8088%20Board/8088%20CPU%20Board .htm The PCBs are $20 each plus $3 shipping in the US and $6 elsewhere. The S-100 SMB is a dual PCB so it is $40. Please send a PayPal to LYNCHAJ at YAHOO.COM and I will send your boards right away! The S-100 SMB and S-100 bus extender boards are specialty items and it will be a long time before these are reordered. If you are considering getting one or more now is the time! I am stuck and need to move the remaining boards to free up the funds to do other board orders/reorders. Thanks and have a nice day! Andrew Lynch