Using the Fertile Focus to try for pregnancy is cost effective. Since you can reuse the Fertile Focus indefinitely, you save a lot of money on ovulation prediction kits. I also like the fact that you can test every few hours if that makes you happy, without spending a ton of money. In fact the entire Fertile Focus kit costs less than one month's ovulation prediction testing on the cheap end.
The housing for the microscope is metallic, so it feels sturdy. And yet it's light weight. This makes it easy to slip into your pocket or purse. The nice thing about microscope testing is that it's hard to tell what you're doing, so you can use it in public. The Fertile Focus has it's name on the outside label, so if you are trying to keep your baby plans a secret, this might be a draw back for you.
It does come with instructions on use and care. This includes sample photos of ferning and transitional phases. You can also use vaginal secretions with the monitor.