AP and EAD are free if you pay $1070 for I-485 (or $1010 between mid 2007 and late 2010). so it just filling out two forms, free to you.
m*n
4 楼
if you don't need them, no need to apply, it sometimes will slow down your process, it happens when your ead is approved then take forever to get your green card. And it reduce the workload for uscis, they are already very slow but if you do need them, go ahead and apply