I want to setup a slowmo video booth at a party. The quotes I got were for $2k so I thought I might be able to set this up myself for around the same price or less and in the end have a nice camera I could keep. Is there anything in the neighborhood of 240fps 720p for $500. I see the GoPro Hero 3 shoots 120fps at 720p for around $300. Any advice or guidance would be great.