I am not sure that 'buy one in a shop' is always the best solution. I bought my SS08 Electric Blue RH City at Harrods and it turned out to be really dire quality. The leather is soft and smooshy but weak, the dye fades, the sealant on the edges is brittle and is coming off and the roping of the handles has both faded and frayed.
You could try getting a second hand older bag that had been looked after better than the one you are considering now. I do believe that the older bags were better made.
Yep. I think I've heard that before somewhere about the older bags. I somehow prefer them to the new ones, as said. I just started to look for a second hand one. Guess I must be patient. I really do not mind a second hand one, good condition and reasonable price (btw does harrods have sale on balenciagas?)