What electronics would you not buy at a rate of .02 per pound?

I ask this question because I havw been buying up almost all "other" (as in non valuable) for $.02 per pound. The idea has worked well because people can gather up boxes of old stuff like that mentioned by Escrap to which typically costs less than $2.00. As someone on another thread, its good advertising and more of an incentive for these individuals to give you a call. Some whould never call for their one cell phone or one laptop but let them believe they are going to get money for their boxes of old stuff and they tend to want to call. So far, the only things that are absolutely net negative to buy at .02 per pound are speakers, TV's, Monitors, Mice and Keyboards (although i recently found out that a local buyer pays .025 cents per pound for keyboards.