as often as we can get it by our wives/girlfriends significant others is "new knife time".
I think most of us pick up at least a few a year.
the good news is that our hobby is tax deductible. We "need" it for work.
At that range you can get a lot of great stuff. Just this week, just picked up an American made powdered steel, New West Kniveworks santoku at 280.
But if you want Japanese you're looking at a pretty good stainless or a pretty good san mai construction at that point, not monosteel unless it's pretty low/mid end.
You haven't told us what type you're looking for. What shape (sujihiki gyuto etc, or a kiritsule ) or (western style construction, but Japanese craftsmanship, or Japanese style and craftsmanship.
Let us know a little more and maybe there are some of us that know abut some good deals or good dealers. Of course you already know all the name brands (misono, tojiro, masahiro, yaxell, tamahagane, glestain, mac. brieto, suishin, chroma etc.) They all well deserve the reputations they have earned. I've owned at least one by each of those in various levels and shapes and have never been disappointed. You can safely pick up any one of those and know you've made a good purchase.
I picked up a chroma last year. they have been the winner in 3 of the past 6 Bocuse d'Or and have been finalists in all 6. If you want a western style with a Japanese steel, Tojiro Senkou series are great! and they are cheap! Of course you've heard of their famous DP series. The senkuos are just a little better. Heston Blumenthal uses them and it was used by the Bocuse silver winner Danish team this year. They are a really bargain. It's my everyday make/model.
Tojiro also makes shirogami, aogami and super aogami knives too, also very inexpensive.
I just picked up a santou in powder steel from New West Knifeworks that's im trying out now
Just off the top of my head for retailers with good prices check out hocho knives or chef knives to go. Amazon has the senkuo and they sell some of the more popular, models such as mac. They each have a ton in your price range. maybe some of the other guys know of some better dealers, or know about specials
Although it's Taiwanese company not Japanese, The company that's sponsoring the cheftalk giveaway this month has a really interesting Damascus blade in an 8 or 9 inch chefs style in that price range. I think it's cool to be able to choose the level of sharpness it comes rom the artisan from 2K, 5K, 10K, 15K and even 30K sharpness. You won't find that level of service from a German company!!!!!!
If you like an inexpensive artisan class American made, but Japanese style knife. Murray Carter 17th generation Yoshimoto bladesmith has his inexpensive knives (muteki series) in your exact price range. I believe these are a bargain at only 300. They are "white #2" so they WILL discolor, but most of us are proud of our real carbon knives and we love the patina.
Despite that he shills for Shun, Alton Brown uses Carter.
cheftalk used to have a pretty active buy/sell/trade section, but it hasn't really been active in quite a while