I had the exact same thing happen to me.
I purchased a large normal female and the day she arrived, she was ovulating and later laid 10 eggs! But it turned out to be a pretty good experience, I learned a lot and got some really cool pastels out of it and made a little extra money, even traded one of the babies for an adult male spider.
My opinion, keep the eggs, you could hatch out something really cool and/or earn a little cash back later.
It also doesn't mean you can't start another project for this season with different morphs ;-)