Yes this is true, you might want to check out the following website, like I did...... and found out that I should be saving up my used dull blades and for a small price I received ten brand new Olfa blades.
I sent them my old 10 blades and received in the mail a brand new package of Olfa blades for a small fee, and in the USA you get free shipping.
http://www.lpsharp.com/
I also found that by dabbing a bit of sewing machine oil on my blades they don't wear out so quickly.
I am not affiliated with this company, a fellow quilter told me about it sometime ago, and thought it was time I shared with you all
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