Spring Break. Not mine, but players.
Any holiday brings out the sellers who quest and gather. They take those items toss them up on the auction house for "just want to get rid of prices".
Times like these I stock up on raw materials for raiding, selling, or later crafting. We are not talking much later to sell either. A week after a holiday and I can get a 50-100% profit.
Frost Lotus is the first on my list. In December I stocked up buying out any that was 6 gold or less. The going rate on my server is 17 gold. Nice little discount. I am looking forward to restocking and making a profit on that one item.
Hmmm... what else should I be looking for pre-3.1.