Criminal(apparently probably not) Opportunists, PUNKS!

Lunchtime friday I was getting off my bike in castle hill. Van pulls up next to me with 2 guys:
"Hey, do you want to buy a full Yamaha home theatre system? Brand new, worth $6000, for $1000, gotta take it now."
I looked in the back of the filthy van, full of new yamaha AV boxes.
I thought I'd test 'em out:
"You Got a card, I'll give you a call I don't need one but a mate might"
"Nah man, gotta take it now"
"I'm fine thanks, cya later" and I walked away, they drove off.
I'm thinking
"Should I call the cops with their number plate (didn't because I'm obviously at my work and they might put 2 and 2 together)" and
"did they approach me instead of the other people around because I'm on a bike so I'm more likely to be open to the idea".
Just thought I'd share it, 100% stolen I'd say.
"Hey, do you want to buy a full Yamaha home theatre system? Brand new, worth $6000, for $1000, gotta take it now."
I looked in the back of the filthy van, full of new yamaha AV boxes.

I thought I'd test 'em out:
"You Got a card, I'll give you a call I don't need one but a mate might"
"Nah man, gotta take it now"
"I'm fine thanks, cya later" and I walked away, they drove off.
I'm thinking
"Should I call the cops with their number plate (didn't because I'm obviously at my work and they might put 2 and 2 together)" and
"did they approach me instead of the other people around because I'm on a bike so I'm more likely to be open to the idea".
Just thought I'd share it, 100% stolen I'd say.