Tojiro DP as a brand is rather widely recommended for entry-level "good value" in Japanese knives, and since you specified VG-10, then you need look no further.
I think the pricing on most large Internet retailers is going to be about the same on those knives. You can shop around for someone having a sale or free shipping or something to save a few bucks.
We are limited to recommending only vendors who are (paid) supporting member dealers of the forum here. I haven't really shopped for kitchen knives through those dealers, so I can't help with specific "where to buy" suggestions.