Yep, in the UK, you can still get a Makibox for £100 http://www.makiboxclearance.co.uk/co...s/printer-kits but please, don't!

I have had one of these machines for the past year and although it's a great way of learning about 3D printing, the end results are never going to be great, there are simply too many design flaws with the basic machine:
1. Hot end is not up to the task and will fail.
2. Extruder will break
3. Wobbles in all axis
4. Dodgy firmware and very hot running stepper motors

Have a look on the various forums and make / create websites and you will find quite a few designs that use parts from paper printers - plus a wood or aluminium frame to create a quite usable printer. The only bits you may need to buy specifically might include the hot end and extruder. Pretty much everything else can be scavenged and repurposed.

If you do want to by ready made, £200 / $250 is where the market starts really.