In a widening of its claim last month that the proposals could "wipe out" A3 weekly news-based tabloids, the PPA said that A4 titles "straying marginally" over the 10mm thickness and 250g weight thresholds could be hit by mailing cost increases of over 250%.
The findings had "major implications" for marketing and advertising activity, especially cover mounts, it added.
The Royal Mail is analysing consultation feedback following the 30 June deadline, and plans to put its case forward to the postal regulator in September.
The PPA said its latest findings were "yet another example clearly demonstrating that size-based pricing does not suit the dynamics of the magazine industry".
If approved, the structure would come into force from October 2003.
Story by Gordon Carson
Have your say in the Printweek Poll
Related stories
Latest comments
"And here's me thinking they bought the Docklands Light Railway."
"15 x members? Why don't they throw their lot in with the Strategic Mailing Partnership (SMP) and get a louder voice?"
"Some forty plus years ago I was at a "sales" training seminar and got chatting to the trainer after the session had finished.
In that conversation he told me about another seminar he had..."
Up next...
Further breathing space
'Serious group' interested in Highcon, new deadline set
Automation welcomed
Colourbridge enhances efficiency with new Duplo multi-finisher
New business unit includes OpSec
