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MOQ, stands for Minimum Order Quantity. It's a wholesale term meaning that's it the least amount you are able to purchase, but you can order above that amount to get a better price.
Average sales price takes into consideration the lowest price the item has been selling for over a set period, as well as the highest price and then averages the two extremes out to give you an average price
But It Now is an auction site term, it gives the buyer the option to click the tab and buy the item, rather that bidding and waiting until the end of the auction.
Average end price, this is the end price of the unit that hasn't actually sold. This stat is teh average price of where the item got to, without selling.
I think that covers it for you, but let me know if you need further :)