About: http://webisa.webdatacommons.org/109129587

Property	Value
http://www.w3.org/1999/02/22-rdf-syntax-ns#type	http://www.w3.org/ns/prov#Entity
http://www.w3.org/ns/prov#value	Ovulation test kits are around the $20 range depending on which type you buy. (I like the saliva monitors like are shown here.) PH testing strips costs are generally less than $10.
http://www.w3.org/ns/prov#wasQuotedFrom	sandydeanarticles.com