For the price you could make something much better and bigger.
Those are so small that a 6 quart egg box will not fit in them, you need to incubate one clutch in several deli cup.
This means you might fit a clutch or two at the very most and than you will have outgrow it.
I would recommend building your own or investing a little more to get something you can grow into and not something that will be obsolete in one season