Originally Posted by
Retro Grouch
How much do you think you need to raise your handlebars?
Most of the time the cost effective way is to substitute a stem that has a higher angle. Incidentally, Quil stems generally only allow an inch or so of height adjustment too.
...this. There are a whole lot of various configurations for rise and reach for threadless stems. One of them usually works if your bike was already pretty well fitted.
In general, to sit farther upright, you need something that angles up and has less reach.