Can I ask why you say this? I assume dual 1 ohm coils are not available on stock level 3's?
right u cant get 1 ohm coils till u get a lvl for or in ur case a lvl3 with lvl4 soft parts
it's because eacher dealer gives a little bit different price, and that price is between them and the buyer. and your really only supposed to discus MSRP on the forum.
I like knowing it's something I built. It's my hard work and money into it and I can be louder with a single sub than most are with there 2 or 3 sub setups from a shop