I think DemoDemo offers the most affordable tutorials I've seen so far. If you choose the subscription, you can have just about every video turorial available for a low monthly fee, which is very good.
I don;t know how do you define " less expensive", but I have recently searched for tutorials and I should says that there are not too many reliable sources, where to buys some. So I decided to go with DemoWolf. I don;t know if you can find better and cheaper service, but DW are fine.
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DemoDemo is priced well. If you are not looking to pay that one lump sum, they have a monthly subscription plan too
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