3.3.1 issue with dollar "$" sign

I had a notice on my vBulletin 3.8.4 which said:

Purchase $100.00 or more from our store and take $20.00 off instantly...

It showed as 0 or something odd, something with the $ sign in notices that didn't work too well.

Suggestions?

Please try to modify functions_vbseo.php file:
find:

PHP Code:

switch($place) 


add above:

PHP Code:

$inscode = str_replace('$', '\$', $inscode); 


Do I put your added line ABOVE or BELOW the switch line?

It should be added *above* the switch() line.