Hi alxths,
I have just been learning the piano for 6 months and bought a Suzuki Keyman digital piano about 4 months or so ago. It is cheap, portable, probably the lightest one on the market, and I am pleased with it. I bought it on ebay brand new and much much cheaper than retail. NEVER buy a digital piano at the retail price (or for that matter, anything at retail value)!
Anyway, as far as the pedals go, mine came with a sustain pedal which I am not using as yet. My piano instructor told me that the sustain pedal is really the only one that you need. And if you are a beginner, the pedal won't make any difference for a while because you will want to learn sight reading, rhythm, tones, chords, scales etc... first, which takes a lot of effort and time. The sustain pedal just makes a sound last somewhat longer.
If you are a beginner, I would suggest buying a digital piano that does not cost more than $1000 (meaning up to $2000 retail)! Buying from ebay from a seller with excellent and detailed history is very safe. I have found a Casio PS-20 for $700 too including shipping + a few bonus accessories (it costs something like $1400 retail)!
I can e-mail you a number of websites and links to digital piano deals that I found when I was researching everything. Let me know if you are interested - perhaps you should choose a model first. Also remember that you might want a bench and stand (I haven't bought those yet), which are expensive if you go for looks and sturdiness. Initially, you can create your own bench and stand in the house through a system of chairs/mattresses/tables, but it is not very good for long-term technique development!! Unfortunately, learning piano and buying equipment is not for the low-income for sure.