Leslie Sansone...her videos are amazing. Its a 'walk at home' video, meaning you walk in place that you were standing but also she makes you move around like side to side steps, back and forth steps, knee raises, leg raises, also she adds in arm movements like raising your arms up and down or moving them side to side.
Its pretty amazing, and fast. She has dvds that start from 1 mile, up to 5 miles. I have 3 dvds of hers so far. My favorite is the '5 mile fat burning walk'. Each mile is 12 minutes long, and she makes it fun for me and I can do it right in my living room.
I only paid 10 dollars here in the US but don't know how much it is where you live.