The best ovulation test to use?

🎄☃️❄️Kayla❄️☃️🎄 • 27 yrs old & mother of 3 sons Aiden, Eli & Leo ❤️ TTC 3 years, 2 miscarriages & now sweet Leo is 3 months! 💞💖💖

I personally haven't started using OPK tests yet. I'm not in the best financial state to go and be able to buy a bunch of 10$ tests. I spend enough on pregnancy sticks lol.. So first question, what is your personal favorite OPK test to use? Next question, what is the cheapest one? Is there any $1 ones? I'd like to buy a few but can't afford to spend $10 & get a bunch. Thanks in advance! 💜

♥〰Kayla〰♥