I'm always amused at the "experts" on station valuation here.
A station is always, in the end, worth what a willing buyer will pay to a willing seller. In this case, based on the APA (which is, in fact, online and has been from the moment this was filed), the church is paying $50,000 in cash and crediting Townsquare with a $100,000 donation for tax purposes. There's no land changing hands, because WINE runs off the same tower that will remain in use for WRKI.
For about the price of a decent new car these days, the church gets on the air in one of the more heavily Portuguese-speaking parts of the country and can reach the audience there and raise money. I'd guess it's well worth $50,000 for them, and that they don't think they got robbed - and so who are any of us to say otherwise?