Just because it costs pennies to press to plastic doesn't mean it doesn't cost more to bring that product to market. You also completely glaze over the fact that adjusted for inflation, music costs the same or less now than it ever has. You have more convenience, more options, and higher quality than ever.
If you don't like the price someone is charging for an album, you're not being ripped off, the seller is just being an asshole. If enough people convey this message by not buying, the seller will change the price/business model or simply vanish. By stealing, you aren't changing their minds, you're making them victims.