I would suggest using "[ spoiler ]" and "[ /spoiler ]" (removing the spaces and quotation marks) to hide ALL of the pictures - this will help reduce the clutter.
I'd also strongly recommend using the "[ size=SOMENUMBER ]", "[ /size ]", "[ color=SOMECOLOR ]", and [ /color ]" tags to help make the section titles stand out; for example "[ color=Red ][ size=6 ] Xbox 360 [ /size ][ /color ]" looks like this when you take out the spaces:
Finally, some personal preferences:
1) Please separate the name of the item from the name of the bidder; you can do this very simply by putting a " - " (dash mark) before the name of the bidder. Or you can go crazy and put the name of the bidder in a different color. This will make it easier to keep track of who has bid on what.
2) Please put all of your strategy guide books in one section (instead of having separate ps2/xbox strategy guide sections); this will reduce the odds of somebody overlooking a guide if they're scanning through the list very quickly.
3) A lot of people start bidding in the last 3 - 4 days; if you're waiting for 60% of your items to be bid on before announcing a more firm end date, you're probably going to be waiting until May 25 or so (unless edwin or blackdog decide to place $1 bids on everything). Just announce the final end date now and people will start bidding.
Good luck with the lowball, and I'll be back when the final end date is announced.