If the photo is from a breeder, I would not recommend buying from them. They do not necessarily have very healthy pigs and it's very hard on the sows (who can die of it)
If that's not a breeder and you do end up getting baby piggies, you will need to baby proof your C and C. The holes in mormal 9x9 grids are big enough for baby pigs to escape through or even get stuck in, and so most members use two grids placed slightly apart to make the holes smaller -
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You can use cable-ties to hold them in place -
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Your cage will look something like this when finished:
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