best offer needed on great surround sound system in Sarsfield, Ontario for sale

Selling a Definitive Technology Pro Cinema 800 set with stands, includes the following.:
4 x ProMonitor 800 speakers
4 x ProMonitor stands
1 x ProCenter 1000 (with wall mount)
1 x ProSub 800 subwoofer
A $1700.00 value, asking $550 or best offer, great set, amazing sound, selling because of recent upgrades.
https://www.amazon.ca/Definitive-Technology-Pro-Cinema-800/dp/B001JQZXCO/ref=sr_1_59
https://www.amazon.ca/Definitive-Technology-ProStand-Speaker-Stands/dp/B00170O1J8
https://www.crutchfield.ca/p_735PCIN8B/Definitive-Technology-ProCinema-800.html
https://www.newegg.ca/Product/Product.aspx?Item=9SIA5SR66S4692