I think VAT is only for England buyers, not the US. So mx reds fullsize to the US is about 155 british pounds which is about $252. Jesus. lol Should be cheaper on amazon.
I have tried blacks from my brother's 6gv2, I like the springiness of the switch. Reds, I hear feel like clouds of boobs, so that's something to consider. I suppose the question is whether you want a lighter switch or a heavy switch.
I bought my 104 Filco blank keys from the classified section. Check there.