The price of plus size

So, I've had my jeans from old navy for a good 6 or more years-not because I'm gross-but because I've worked in offices/ER/EMS so I never really got a chance to wear them...
Anyway! 
I'm online checking prices now and holy eff is the difference insane! Pretty sure the only one with reasonable pricing is target.
Avenue is out of their mind, Lane Bryant well-😂😂😂😂😂😂😂 80 dollars for a pair of jeans?! That shit better cradle my ass and tell me I'm pretty! 
why do I feel like I'm being punished for having thighs and a butt... It's not my fault my genes apparently failed me?? Mind you, I'm a size 18/20.. What the heck is happening?!