PacRakMG - I think you're talking about air coolers. Definitely more than $100-130. Looking at paying around $500. Possibly a little more depending on what size they do.
Ah okay. Yeah, that makes more sense. Well air coolers are a pile of garbage

We have a split system downstairs here but it has too much of an area to cover and I'm sweating inside. Our old house we put in an evap cooler and it did the job beautifully. We also had three massive windows in our kitchen/dining/living area (open plan) and we covered them up with the cheap bamboo blinds from Bunnings. Made a massive difference - didn't have to use the cooler until the end of the day.