Looking for ovascope egg candler

[krstms]

Hi I'm looking for an egg candler such as the brinsea ovascope or something similar for a decent price. I'm not looking to pay full price or I would buy new. I am a Head Start teacher and in need of something that shows embryo development better than the average candler so my preschoolers can see what's going on in the eggs we're incubating. I cant afford to buy new so I'm looking for a used one. If you have one let me know what you want for it and maybe we can make a deal.