Let me guess: you are pretty new to the game

Let me clear up a few more incase you were wondering about those too:
WTS: Want To Sell
WTT: Want To Trade
Reserve (Lowest price the item will be sold for)
S/B: Starting bid (the lowest bid allowed)
C/O: Current Offer
B/O: Buy Out (buy now price)
PC: Price Check
No stupid questions - only stupid answers!