How much will it cost to connect my droid2 global back to verizon but never had that company?

Well i bought a droid 2 maybe 5 months ago not sure. but i first connected to simple mobile. only texts and unlimited calls and text!. so i decided to flash it to metro pcs but what i hate its that i get my msgs late and i cant send pic msgs.. So i was convincing my mom to go to verizon and to connect my phone right there but she says its to expensive..Like how much will it be..or put some companies that are good and cheap! thanks youu