Essential Oil Diffusers!!

                                  Trying to find the best diffuser that is also affordable!!


I have one of these and I like it but we lost the adapter! http://www.ebay.com/itm/H2EO-Ultrasonic-Aromatherapy-Diffuser-Multi-Lights-Model-New-/271337362398?pt=LH_DefaultDomain_0&hash=item3f2cf793de  And I also want one in each room!
I have some smaller ones like these that do not work as well, so I am looking for something that works well and is affordable!

http://www.ebay.com/itm/Aura-Cacia-Pure-Aromatherapy-Pocket-Diffuser-NIB-/151182865330?pt=LH_DefaultDomain_0&hash=item23333373b2

http://www.ebay.com/itm/2-Aura-Cacia-Aromatherapy-Diffusers-1-new-1-used-extra-refill-pads-/200997114750?pt=LH_DefaultDomain_0&hash=item2ecc5c937e

http://www.ebay.com/itm/USB-HUMIDIFIER-AROMATHERAPY-DIFFUSER-AND-AIR-PURIFICATION-ALL-IN-ONE-UNIT-/141131882747?pt=LH_DefaultDomain_15&hash=item20dc1da0fb

http://www.ebay.com/itm/New-Conair-My-Aromatherapy-with-Oil-Colors-May-Vary-Free-Shipping-/251274877008?pt=US_Curling_Straightening_Irons&hash=item3a81265850
This one cost about $10. when I bought it now its $181. I'm not sure I would buy it again at $10. let alone $180. crazy!!
           I will be researching and finding something that really works well and is affordable!!