I have to agree with jbopray. I've played guitar for 12 years. If you are wanting to get into guitar, buying cheap will make you NOT want to continue. Especially when it comes to acoustic guitars. Cheap acoustic guitars typically have a problem that the action (meaning how far the strings are from the neck) cannot be set correctly due to either warping of the neck due to materials or poor fretting due to poor mass production. I probably would have quit playing when I started had my dad not decided to also play and bought himself a nicer guitar that I would play one.
Electrics are a little less finicky because the strings are way lighter, so it is still pretty easy to play, but if you play on an ESP LTD Deluxe and then play a Squire, you will notice how the neck feels cheap and the tone is more difficult to tune in. Cheap guitars also may have the intonation issues or neck issues as well.
That being said, you don't have to spend lots of money to get into guitar. You can pick up a used Epiphone Les Paul guitar for under $250 used from pretty much any pawn shop. Epiphone is hit and miss though, so have somebody with you who can play it. When they're good, they're good, when they're bad, they can be awful.
For amps, I don't know much about the ones that are offered here, but my brother recently bought a Line 6 Spider 15w that he has been really enjoying. Lots of nice tones can be made with that amp. You can pick one of those up new from Musician's Friend for $100.
Just know, that if you pay $100 or less for a guitar, you are probably going to be not happy with the quality.