Best offer message

[Bombaybunty]

I'm selling my son's old bikes on eBay. Just had a message about what is my best offer for one of the bikes.
I didn't do a buy it now price, so is this possible? Don't know how to reply!

[VioletBam]

Just message back there's no best offer option.

Thanks for your message, the price is as listed.

[Bombaybunty]

Thank you! Have sent a message saying exactly that.