depends on what the market is doing....you may have to up your...

depends on what the market is doing....you may have to up your bid and chase them, or,if your accumulating, sometimes you can lower your bid.....you can go with what you get, as long as brokerage doesnt push your cost up........so many variables....just depends on the situation
or, if its a friday arvo buy...as Endless says....leave it open....if your happy to