I believe that I saw a deal from Target, or Best Buy, in the deals forum section a little while back for PPlus codes via email for around 40ish bucks.
I don't know if the deals are still good, though. I also know Dell had a good deal on the DS 4's a while back so you may want to check with them.
Cowboom sometimes has Xbox 1 and PS4 systems etc and they are an offshoot of Best Buy, but they only sell used.
Sorry I wasn't of more help but good luck bro man.