Cheapest camera with remote trigger? (for book scanner)

[Donald_7]

I need a camera to make a bookscanner like this http/www.diybookscanner.org/forum/viewtopic.php?f=1&t=1139
Only need minimum 5 MP. Inferred remote or cable remote is good.
Most important is cost since I am going to buy 2 of them.
Thanks for the help

 

[basroil]

Why not just buy a real scanner? http/www.amazon.com/Handy-Portable-Document-Photo-Scanner/dp/B0039V7YJC/ref=sr_1_7?s=office-electronics&ie=UTF8&qid=1445936069&sr=1-7&keywords=book

http/www.amazon.com/Fujitsu-PA03641-B005-Document-Scanner/dp/B00FPW9946/ref=sr_1_5?s=office-electronics&ie=UTF8&qid=1445936069&sr=1-5&keywords=book
and
http/www.amazon.com/OKWOLOK-Portable-Scanner-Jpeg%C2%A3%C2%A9support-software/dp/B0151T6PM6/ref=sr_1_27?s=office-electronics&ie=UTF8&qid=1445936135&sr=1-27&keywords=book

They are cheaper than your setup and are actually made for what you want to do.