Hey!
i just went to SAMASH the other day and bought myself my first guitar and amp. I got a Marshall MG10CD amp for 69.99 and it is really good for the price you pay. Everything is pretty good, and the tone adjuster gives the sound an awesome twist!!! the only thing i have noticed so far is that whent the tone is way do, the highest string doesn't get picked up so well

but other than that it is a GREAT amp. the other amp i would recommend looking at would be the Fender Frontman 15 or 15R, they didn't have them whe i was there, but the guy at the desk said they weere one of the best sub-$100 amps that he knew of!!!!
Jason