Regardless if these are pure bred albino firemouths or of hybrid creation, they are pretty cool looking. To answer your question - it depends. From my understanding, there are different gene mutations that can cause albinism and if the two albino fish you breed together have the same mutation, then yes it could produce albino fry but even then it is hard to say with hybrids. If the two fish carry different broken genes for albinism then all the fry would likely just look like hybrids of the standard color of either parent fish.
Keep us posted if you buy these!