Hi all. Today when I want to purchanse one more R4 in Volumerate, I found that the price raised. Why? http://www.volumerate.com/details.vr/sku.1202 Comparing with SuperCard, Acekard and M3 Real as below: http://www.volumerate.com/details.vr/sku.60049 http://www.volumerate.com/details.vr/sku.13829 http://www.volumerate.com/details.vr/sku.60118 The R4 is the cheapest one while the Acekard is the most expensive one. Will the R4 factory stop producing?