Try online. Ebay is great. The cheap monitors don't work very well but you can get the expensive ones on ebay for around the same price and they are much more sensitive and reliable.
eBay sell them the separate speaker and probs are the best it will pick up baby from 8 to 10 weeks I brought my Doppler off this ladie who picked up her 2 kids and 8 weeks I payed £30 for the hi bebe one on eBay best buy ever still use it now at 30 weeks 3 days well worth the money it stopped me worrying try eBay or amazon :-) x
I bought mine on amazon.com $35
They have one there for thirty dollars supposedly , just never in stock heh.
But good idea, thank you :)
i got mine from ebay for like 40$ you can try craglist but ebay is more safe there really expensive at target or walmart and im not to sure about babies r us though.