Wow, what a strange experience! On the upside you got an excellent hatch rate. :)
My experiences acquiring animals from breeders has left me with mixed feelings. In one case I acquired silkie chicks that turned out to be silkie crosses. No idea what they're crossed with. I wrote the lady & told her I didn't mind they weren't full silkies (even though I honestly did) because I really wanted to know what the mix might be. Of course she never wrote me back.
In the second case we bought 4 ducks and were told 3 were females. It turns out 3 are males.
In the third case (this is the gal I acquired my seramas from) there were a number of little details that weren't quite correct during our conversations (like age of a second flock she owned shifted from 5 months to 7 months within a week). When I finally purchased the birds I was told 3 falsehoods:
1. they rarely go broody (as you know I have a broody on eggs right now, and a second one who's been in a broody breaker cage for several days, sigh).
2. the 5 girls would lay me 3-5 eggs a day (once I got 4 eggs, but before these two girls went broody I was typically getting 1-3 eggs a day).
3. they were all A class. This was thankfully a lie as I don't care one iota about their weight unless it's too low for them to lay effectively. I weighed 3 of my girls one afternoon and as best I could tell one was A class and the other two were C class weights.
Naliez, I'm hoping for the best with your babies but just because my own experiences have led me to feel suspicious of breeders, I want to make you an offer. If you find that as your babies continue to grow and feather out that they aren't full blood seramas, I invite you to send me a PM. I would be happy to send you whatever eggs I could collect over 3-4 days for cost of s&h.