At first I thought that 4800 JPY was a bit much, and it is however for me this may not be a deal breaker. The 1/72 kits look nicer and are bigger and cost less but require a large amount of time to complete and for me right now that is a deal breaker. I have had my VF-25 kit for several weeks now and have barely made any progress. If it will take me 12 hours to complete that model for me that is $$ lost from not working. Although it is very fun, I dont have the time for much model making right now (I am doing a little anyway and have at least 6 kits that I am planning to build).
My point is though that if these look good enough in the end I will be buying them. Especially if they do bust out the VF-4! But then again I dont think many of us would pass up a VF-4. For me the VF-25 armored versions, the VF-171, and the VF-4 will be definite buys. At this price it is a bit much but not deal breaking yet.