De mano de Stuntdub nos viene un listado de factores que pueden darnos un indicador del precio de un link:

1. Keyword/Theme/Industry Worth
Tool - Overture Bid Tool

Relative to: SERP Value

2. Link Pop/Power/PR/ Googlejuice Link Popularity
Tool - Y site explorer - or handy yExplore FF extension

Relative to: Click through value, traffic levels, 2nd tier IBLS (your IBLs IBL’s…their “network” if you prefer)

3. Outbound Links
Tool - Outbound link bookmarklet -
Installation - drag this to your browser toolbar.

Relative to: Percentage of page outbound link value

4. Unique Linking Domains
Tool - Link Harvester

Relative to: Overall trust link score

5. Placement
Tool - Use your head and look at this.
Links in the body are worth more than navigation or advertising links.

Relative to: Overall trust link score, co-citation, proximity, anchor text usage

6. Age
Tool - Wayback Machine, or search status ff plugin which gives one click access to the wayback machine info.

Fuente: Stuntdub