Hi so i have a Sovol SV07 and was wanting some multi color capabilities and was wondering what kit would be the best bang for my buck under 100$
any help would be apricated 
I don’t think you can buy a unit for under $100.
Most kits now would require you to replace the hotend and/or the extruder.
Sovol is working on a unit, it should be released buy the end of the year.
$100 is NOT going to fund a robust reliable changer that you can set and walk away from.
A hardware kit for the ERCF V2 (Enraged Rabbit Project) is about $125 but you’ll burn through A couple rolls of filament and without a doubt another $25-50 for parts not in the kit.
The 3DChameleon is open source and could probably be built for $100 if you delete the the custom circuit board and replace it with a RPi Nano with 2 motor drivers. You’d have to add it as a separate MCU and write all the macros to make it work with Klipper.