antibodies-online.com

The service was fine. One of the antibodies listed on the site as available was not available.
Time to obtain the antibody is a bit slow.

Strengths: Very large, nice catalog of antibodies. You can sort antibodies by price (this is lacking in many other catalogs). Other sort options (conjugate, (i.e. dye), host species etc.) are available.

Needs to improve: They don't make their own antibodies and so the contact their vendors to obtain the antibodies. Some of antibodies listed on the site as available are not actually available. You have to contact them to make sure. They don't provide much information on the antibody such as dissociation constant (Kd), forward and reverse binding constant, isoelectric point. For example AbCam does this for some of their antibodies.