"Low budget" and "cutting steel" can't live in the same sentence.
In fact, "low budget" and "CNC" are somewhat distant cousins as well.
The only machine in that list which is truly capable of milling that part is the Tormach. It won't be anywhere near $2000, I think you'll spend 4-5 times that amount just to get started.
Sorry to disillusion you, but I think your expectations are unrealistic.
How many of those items do you need? The hourly rate for machining is pitifully low. Perhaps contracting out the work might be a better option.