fermentation chamber question

I do not have any palce to keep my fermenter cool nor store the bottles during carbonation. Our house just gets too warm to brew beer so a chamber of some type is in order. I don't have room for a full sized refrigerator, so I am looking at either a 4.4 cf minifridge or a similarly sized wine cooler. My question is just what is the temp ranges on one of these large wine coolers? Does anybody know? If the wine cooler is in the right temp range I won't have to buy an external thermostat. I can buy either of the above appliances for 114-149 new at Sams. Sams alsosells a complete kegerator for $449 which says it can be converted to a 6.6 cf minifridge. Anybody else use these. I am afraid I ruined the last batch of beer (as far as good taste is concerned) by letting it get too hot the first few days of fementation.I won't brew again until I can control the temps.
Thanks

you could use a swamp cooler also, just rotate frozen bottles out couple times a day.