But considering the fact that it has 1,300 Excat Monthly Searches a $3.19 CPC and a good level of advertising for the term "Memory Notebook", does the value of this domain increase?
The words are reversed. Do not rely solely on search data when selecting domains, apply common sense also. About 99% of the time, a domain is worth about what you pay. If it's available, it's almost certainly worthless.