While I admit- compared to most Masakuni I have seen listed, that is a cheap price for their tools.. But still, The Masakuni you posted just happen to be on sale over $40 off the regular price, and the JR pruners are full price with free shipping... So, ON SALE, they are still $20 more?
These are the sticker shock Masakuni prices I think the OP was referring to:
http://www.dallasbonsai.com/tools/traditional/masakuni.html
Right out the gate: three different pruning shears $556 EACH!!! Gatdawg! On down the page they want $741 for some SHEARS!
I cannot say I know what causes such a dramatic difference in price, but this is insane!