Ive read about how they work etc, not sure if it cheap to start off with but it must save money in the long run by not having to buy opks all the time!
I had spent about £30 on opk's so I decided to invest in something that's re-useable? Plus, it can be used by friends after (fingers crossed) I get pg? It cost me £22 (free p&p). I was only getting faint 2nd lines on opks, so I reckoned I'd nothing to lose by investing in one & seeing if I could tell when I was ov'ing by using it.
Thats not a bad price! I'm the same as you... i've never even had a 2nd line, but from my charting i'm ovulating... so maybe.. i could get one to put my mind at ease cos i'll be able to see the crystalisationey thingy and its something more than just temps to show if i'm ovulating.
www.accessdiagnostics.com I'd got my opk's from here. There are other ones but this had the best reviews/success rate? I guess the proof will be in the pudding- or 'bun in the oven'- LOL! I never thought I'd see the day where I'd be inspecting my early morning spit! [-o<