DO NOT call one of those "invention companies" that advertise on TV.
On a related note, for anyone who has ideas about writing a book, don't go to those places that advertise they'll publish your book for an upfront set-up fee, all to be refunded out of future sales.
These "vanity publishers" may be fine for someone who just wants a few dozen copies of a book for friends and family with no financial gain in mind, but that's about it.
If no regular publisher will take on your book and pay a reasonable advance, it's because they know the book won't sell enough to cover the costs.
