Mr.miyagi thanks for your reply. I'll follow up with what I have found.
http://chaholog.shop-pro.com
I was given this link on another thread here. They sell TFA and FA flavors in 10ml containers for 420-480 yen, shipping is 800 because for some reason they will only ship in a refrigerated truck.
to get pg and VG you basically have no choice but to order overseas, and the shipping for that is 60-70 us because of the weight. Your quote of 20 is about right if only ordering flavor though, at least from what I could find (please share if you have found a better option!!)
adjusting for the markup here and the shipping prices - if your order is only 40-50 ml of flavor then the link above is more affordable. But around the 60-70 ML mark overseas starts to make sense, and when you need other materials as well overseas is the only choice... At least for now.
Finally ecigeretteexpress is the best vender I've found (variety of choice for flavor, lowest shipping quote, also sells devices, highly responsive customer service). Many other venders I've looked into do not ship to Japan, or the shipping was about 100-120 usd for the same order/weight (~5 lbs due to PG and VG order).