Just got new tires because my alignment was bad. Took the car to get an aligntment the next day and the guy said I need my control arms replaced (he has 8 parts total listed). The quote JUST for the parts is $1500, plus $500 for labor. I was looking at the MPN and checking out ebay where there are a lot of OEM parts (according to the seller), and the list I pieced together had me at $400 total for all 8 parts. If this was the case and I am looking at the right stuff, that would save me $1100 which would be amazing since I am a college student on a VERY tight budget. I will list the MPN below, as well as the links to the parts I found and if anyone could give me any advice on if I got the right parts, or if they look like crap and could point me in the right direction that would be much appreciated. Thanks!

Each/Front/Lower 8E0 407 151 R QTY(4) - Audi A4 S4 1 8 3 0 Quattro Lower Front Control Arms Set | eBay

Left/Rear/Upper 8E0 407 509 A QTY(1) - New Genuine Volkswagon Audi Left Rear Control Arm 8E0 407 509 A | eBay

Right/Front/Upper 8E0 407 506 A QTY(2) - New Genuine Volkswagon Audi Right Front Control Arm 8E0 407 506 A | eBay

Right/Rear/Upper 8E0 407 510 A QTY(1) - New Genuine Volkswagon Audi Right Rear Control Arm 8E0 407 510 A | eBay