Go directly to the physical store that sells second-hand electronic products.
But these prices are relatively high.
It is recommended to buy second-hand goods to the home appliance forum, IMP3 forum and these trading sections.
Household appliances like MD, CD and A very much, and many of them are second-hand.
But find a reputable seller.
Don't pay in advance. Unless you trust him very much.
I hope you find a good baby.