Packed Oscillators are fine and recommandable for many reasons, and are only a little bit above 1 USD. They also contain the DRIVER circuitry, which is a major problem in low cost MC chip design. Driving a quartz needs a lot of current! Against the believe of most people, quartzes are more coils than capacitors 
This is also the reason why additional capacitors are needed to form a good oscillator circuit.
So supplying the current and the capacity from inside a chip is generally a compromise and rarely as good as an external solution. (BTW the Parallax Propeller is quit good there..)
Professional designers have no problems with external SMD capacitors, and the quartz industry does not work for us hobbyists -