My partner has the Icotec 300 and we used it and called coyotes. We haven't used it since I got into Foxpros because the volume isn't great in the wide open but I think it's enough normally. IDK, if I was going super cheap I'd probably go with the 300, skip the decoy stuff and consider it disposable if it breaks because it won't be worth sending in, IDK what their customer service is like. One thing to think about is what everyone else around there has. Different sounds than FP could be an advantage.
Just checked, the 300 is $50 right now. That's what I'd do on a strict budget. Use it till you save for a higher end FP or Lucky Duck.