This article is outdated. Deep based colors were an increase in price back in the 90's. Most stores have a standard price for all colors now. The problems the author are citing are outdated and rarely happen. This is the 2nd time I've seen this article being emailed out, it's irresponsible of angies list to keep sending out this poorly written and inaccurate article.
You've got me very afraid now, I've been taken in a couple of times since I moved here. They take advantage of me because I am a single woman, not exaggerating! From gardeners to inside work. Wouldn't have house painted but I know my HOA will be after me soon, garage door is peeling and stucco needs repair. Got the $1500.00 deal, but paying more for extra work they say I need.
Paint gets more expensive as you go from flat to gloss. The difference is usually around $1 per gallon per sheen upgrade. Flat is the cheapest, then matte flat or eggshell, satin, semigloss then gloss. Paint also gets much more expensive the darker it gets. A white or neutral paint color can be as much as $20 less expensive than a deep base red or blue.