I have a proven pair of Cichlasoma amazonarum for sale for $30. While the fish are currently in Cincinnati I can have them delivered to the Pet Suppliers in Highland, MI for pickup on Monday the 27th. They have bred and successfully raised several batches of fry in my hard water (300 ppm), so they are not very fussy about water conditions. These are a great pair and never ate their eggs or the fry which they happily raised.
I can email you a picture of the two fish if you are interested.
Let me know before Friday, October 24th if you want them as they are going in our auction (GCAS) the next day if they don't sell.
Phil