ezCheckPrinting QuickBooks version should work for you.

You are welcome to download and try ezCheckPrinting software  and QuickBooks virtual printer. The single-user license is $69. You can add unlimited bank accountd and print unlimited checks with no extra charge. There is no monthly and annual cost.

You can learn more details on how to print QuickBooks checks on blank stock here
 
http://www.halfpricesoft.com/quickbooks-check-printing/print-quickbooks-checks.asp 

Please feel free to contact us if you still have any questions at
http://www.halfpricesoft.com/support.asp 

Thanks,

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I have a potential customer that wants me to write checks as well...

I have QuickBooks and bought some blank checks to use with it. However QuickBooks does not print the routing & account numbers. Can you software print QuickBooks checks on blank stock? And the price?

Thanks,

James