I've got a 10 in the V2s and a 10.5 in the 1500s and they both fit great. I'm in-between a 10 and 10.5, but have found most MiUK pairs to fit better in a 10.5 (a bit narrower), while MiUS pairs fit me well in a 10. I have plenty of 1500s in a 10 and usually just wear thinner socks and have used...
Are you implying you are the reseller going out and grabbing up pairs, capitalizing on the new NB consumers? No judgment about how people make their money from me, just curious.