deci,
You might find this a useful link:
http://cgi.ebay.co.uk/SQUEAK-REMOVAL...item1e58f56295
I don't know if you do your own D&P, but if you don't then this is the cheapest B&W I've found:
http://www.7dayshop.com/catalog/prod...oducts_id=6073
I still like film for mono, but found the cost somewhat prohibitive until I discovered the 7 day shop mailers. It's still by no means cheap, but it is more affordable than you can get elsewhere.