It's hard for me as a value conscious person to recommend the 7a over the 6a even though I prefer the 7 a because of the wireless charging. But there's ways to get the pixel 6a for $90 ( We'll technically 50 but you have to buy a $40 plan). From metro pcs although you'll have to wait 6 months to unlock it . But you only need to pay for the $40 plan onc.
But even if you don't want to deal with that hassle it's easy to find it for under $200 on the reso market. Be by the holiday the pixel 7a will start to see sales for $350 or below. $250 on resale.
It's not that I even need wireless charging but I like to have it as a fail-safe in case the port breaks . It's one of the most common things to break on a phone.