A good price depends on the materials used and how they are applied. If you use regular house paint then priming the stucco is needed. If you use an elastomeric or a masonry coating, like Loxon XP, then a large airless sprayer is needed but usually no priming. In either way back rolling to fill the pores is needed.

Also for just the stucco all trim will need masking. So figure some extra materials and labor for that.

It all comes down to the labor involved and and amount and price of the materials used.