No, you won't be able to buy hybrid seeds in the store. I can't think of a time when I've sold a hybrid. I tend to build a garden with them in hopes of getting a more rare hybrid. I donate one of each flower to the museum, usually after I have two but sometimes the only one I have. You might get replicas in the same spot in the garden where the first hybrid spawned among common flowers, so maybe leave that alone and keep a watchful eye. (I am NOT an expert in hybrids in VT.)