Wait for a nice condition Cooey single shot - reliable and inexpensive.The Cooey 840 plastic forend spacer is a bit vulnerable, but new metal spares are available. The original Model 84 is all steel parts.
Second choice is a NEF/H&R single shot - a little more money, more recent production, also quite usable.
Third choice - CBC Brazilian - in it's many guises, Remington or CIL importers - a bit cruder manufacture, many have a broken forend spacer, which is unobtainable.
I would not buy made in China junk, and I have no experience with Turkish single shots.
I'm assuming that your $1500 price limit is a mistake, and that you meant $150 or so.
At the $1500 price point there is one stand out choice - Browning BT-99, a serious Trap gun.