Root Metroflash for droid eris

Have a droid eris and want to metro flash it does anyone know how much it costs? I see on the web page it says for 10 dollars they will metro flash but most everything i read says 40+.

I also wanted to know if anyone has any metropcs roms for the eris and directions on how to flash the roms? and roms that include fixes for web and mms.

Greatly appreciate it.