Sales: voltage converter, bookshelf, microwave, queen-size mattress

1. Goldsource??? Step Up and Down Voltage Converter Transformer ST750 - AC 110/220 V - 750 Watt
   Bought this through Amazon a year ago, see the original link: http://www.amazon.com/Goldsource%C2%AE-Voltage-Converter-Transformer-ST750/dp/B0022TL1BE/ref=pd_cp_e_1
   I have been using it since then every day, it worked well all the time.
   I am asking for $20 for this converter.

2. A 3-level black bookshelf
   See as in picture, bought 4 months ago, asking for $8.

3. GE microwave
   White well functioning and convenient sized modern microwave, asking for $25.

4. IKEA queen size mattress
   Bought around a year ago, both mattress and bed frame from IKEA, was around $220 in total then, very comfortable mattress and bed.
   I am selling the mattress for $80; the bed frame can be free if you buy the mattress. I forgot how I assembled the bed a year ago and I am not a hands-on kind of person, so not sure I could tell you how to deal with it again step-wise. As a result, it is free and up to you to figure out how to assemble---- (there is a manual indeed)
   As I am moving out in the first week of Feb, it is preferable if you could pick up the mattress and bed frame that time, I am living in Mountain View.

For the first three pieces of stuff, I could take them to Stanford campus. For bed and mattress, the buyer is responsible for pickup.