Surely, you have some idea how many you have? [updated 4/10/07]
<laughing>
Okay, I can estimate it, based on the size of a standard 2-row shoebox.
A while back I figured out that it holds roughly 150 cards in toploaders per row. This number fluctuates depending on how 'tight' you like to keep your cards. Because I keep them fairly tight, I actually have closer to 180 per row, but because some boxes contain screwdowns and magnetics, I lower the number to maintain some semblance of accuracy.
So figure 300 cards per box, times 12 full boxes, making a rough total of 3,600 cards. And something like 350-450 non-card items. Does that seem like a lot? Trust me, it isn't. A longtime eBay Member named Dan, the "Thomas half" of thomas-bondsfans, has stated he has more than 4,200 Frank cards - and counting. ;-)
Oh, before I forget - stop calling me Shirley. :-)