I did manage to find a dealership selling Mobil 1 ESP-M for only $8.99 CDN. That blew my mind since it was so cheap. I have removed my DPF since though so it's Mobil 1 229.5 spec for me now.
If I were you, I would call every local Dodge dealership and price out their bottles. Dealerships sometimes favour different brands and end up carrying whoever they have better relationship with. One dealership stuck with Mobil 1 even though most carry Pennzoil now I believe, simply because they always had stock to sell them. Reliable brand.
The DPF delete ends up paying for itself in my opinion, pending what will happen during my emissions test, lol!
2008 Jeep Grand Cherokee CRD
GDE Hot Tune, DPF Delete, Turbo Res. Delete, Exhaust Res. Delete