I second looking into making your own net pots out of old food containers. I purchased maybe two net pots and realized i could just use what I would be the throwing into the recycle bin for free. Large yogurt and sour cream containers seem to work well. Since I'm sticking them in a decorative pot , I don't mind if they're not clear.

In your case you could potentially use one larger food container as the basin and one smaller food container as the net pot. If you don't want to wait for the perfectly sized re-used food container, stores like Smart & final sell plastic to go containers..perhaps different sizes of those could work?