QUOTE(Piano Pupil @ Apr 14 2012, 08:18 AM)

Hi,
I have a Yamaha U3 in the living room and I am very happy with it, however my family complains about constantly having to hear me practice 2 hours in a go!
Especially if I am just learning the notes of my pieces, I think a keyboard should be fine to stimulate the muscle memory, so I could learn notes and do light practice everyday on the keyboard, or sometimes late at night when I feel like practicing; of course, then I could transfer onto the real acoustic piano.
I was wondering if there are any keyboards with weighted keys under ?100? I don't mind secondhand, and don't want something too flashy with a lot of features like metronome and different tones, just 88 keys to get the job done.
Thanks
You will be hard pushed, even at second hand prices, to find one worth playing at under 100.
There are a few casio's around, but imo they sound horrible (I've had a few people disagree with me, but also a lot who agree!). The weighting doesn't feel all that good either.
My advice, which you probably don't want to hear, is relax the budget by a couple hundred and find yourself a yamaha p series (85, 95, 155). 155 is too expensive so don't bother with that. 85 should be the cheapest but I can't seem to find it anywhere at the moment. I used to own a p95 and have to say that it worked out pretty well (now have a clp 470 clav)..
P95P95 are usually regarded as a bit of a bargain due to price/quality and a good digital piano for those on a budget. (no frame or seat though). Still they are a lot more expensive then a cheaper keyboard.
Pedals are probably going to be an issue (you'll have to pay extra to get a half decent one). And you will get different tones and probably a metronome (they all have them nowadays) as a bit of a bonus

In general though you are probably looking for a stage piano.
Good luck though!