Sed command issue in linux

I ran one the script in debug mode in linux and have a problem

ret='$prmAttunityUser=ais' 

Now i need to remove $ from this '$prmAttunityUser=ais' so i had added a sed command like this sed 's/$//g' but its not working could you all please help me with an alternate command
I want the output as

'prmAttunityUser=ais' 

Thanks

$ ret='$prmAttunityUser=ais'
$ echo $ret | sed 's/\$//'
prmAttunityUser=ais

Or if you're working on GNU Bash, try this:

echo ${ret#$}

Works also on KSH.

Jean-Pierre.

Can't you just :

ret='prmAttunityUser=ais'

?