For Sale: Langster wheelset- polished alloy with fixed sprocket and freewheel

Etiquette tends to say its up to the seller. No mention in his post about dibs having priority, he might well have had a PM before your dibs.

Etiquette does not 'tend' to anything, it's regarded as the norm on here, and in the absence of any direction from the seller, as in this case, then that norm rules, since you have chipped in branwen, clearly you are the transgressor, well done! what goes around etc etc