Can a seller cancel a counter offer and accept original offer submitted to them?

[thenorthwind]

I have an item up for auction with Buy Now & Best Offer option.  I received an offer and countered.  In retrospect, I think I would prefer to just accept original offer.  Am I able to cancel the counter offer and just accept to original offer or is that too late?  Thanks.  

[reallynicestamps]

Use Contact Buyer to accept the original offer, if you cannot send a message through the Make An Offer service.