Yesterday there was one for 1.2m, and there was also an auction for one and the highest bid was 900k. I wouldn't be surprised if you bought either of those. Anyways, I don't have enough money to purchase an arbalest in full, I only have around 500k + mw katana and champ rouncey. However, I'm not willing to pay 1.5m for one of the cheapest mw items in the game.
There are two arbalests on the market cheaper than yours, even now. How about instead of you waiting weeks to sell the item, you just sell it for its actual price instead of trying to make 300k+ on your every trade. If people weren't so damn greedy, it wouldn't take weeks to buy/sell things on this ridiculous market.
Edit: Yep, as soon the 1.2m and 900k arbalest went down yesterday, you started your topic on selling an arbalest. Good luck selling for more than you bought it for, especially with these taxes.