Not sure how badly you are in need of a ranged melee unit, but dmm offers alot of alternatives to saki
Here is a list of trading post units you might want to refer to before burning 300 DCs
http://aigis.gcwiki.info/?%B8%F2%B4%B9%BD%EA
Personally, i'll skip a melee gold unit thats just there for spot tanking. There are many token generators for spot tanking and many good plats that can tank harder bosses
Oh yeah, recently they had nice unit up in the trading post. Didn't get it because i needed my spica but she is on my next to buy list
http://aigis.gcwiki.info/?%A5%EB%A5%A4%A1%BC%A5%BA . Free plat princess? Yes pls.