SEOMike - 2:44 pm on Aug 18, 2011 (gmt 0)
There's also the question whether or not the loss of the link would count as an additional negative factor
Exactly. The boost will be short-lived. There is a lot of info contained in Google Patent App #20070094255 [google.com] about link acquisition vs link decay. It's a real good read.
The permanent approach is always going to be better than juggling the pages around.
If you have enough traffic your rotating links will show you which products convert the best and then you can look at profit margins on them. Put up permalinks to the ones that perform best.