I agree. Animals with issues that can thrive and simply need a forever home should not be something to be 'sold'.
Breeder friend gave me a sunglow that was born with one eye for free with the promise to never breed her and he knew he could trust me to give her a pet home for life. This was back when sunglow boas were kinda pricey and he could have sold her but profit was not the intention.
Did the seller give a reason for the high price tag?