Whenever "wipes warmer?" threads show up, I always feel compelled to point out that wipes warmers are not particularly ecologically friendly. Leaving any appliance plugged in and warmed up all the time just doesn't sound like the best idea to me. When thinking about the global energy reality that we are all living with, a wipes warmer seems like a luxury we could all do without.
Alternatives are to simply wet a couple of wipes in the sink before each change, or to keep a spray bottle of room temperature butt solution (California baby makes a great one, or make your own) at the changing table. We do the latter, and just spray it onto the butt, and then use a dry wipe to clean it off. This also helps to keep the wipes from getting mildewed/moldy.
Just a thought!
Lex