B&W Speaker value's

I have the following and have no idea how to value these to sell them.
B&W Sub model AS300
M1 (pair) front speakers I think
These were left behind at a home I purchased and I was looking to find out the value to sell them, any help would be greatly appreciated.
Average used prices are $230.00 for the AS300 and $240.00 for the M1. What they are worth is whatever you can get someone to pay you for them!!!!