If you live in the UK and want an original 3DS that's capable of running homebrew, custom firmware / emunand then check out Argos.
Currently they have the following 3DS consoles for £69.99:
You can purchase online for delivery or click and collect from your local Argos.
I reserved one online yesterday and collected it on my way home today, powered it on to find its on firmware 2.1.0-4E
I'd also say its a very good price for a 3DS in general too, hopefully this info is of use to someone.